Liabilities / Assets
8th percentile
Higher debt load relative to assets than 8% of similar nonprofits.
EIN 23-2909123 • 501(c)3 • Philadelphia, PA
Profile
The function of chf inc is to benefit and perform some of the functions of the chemical heritage foundation. This includes the library special collections and development.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
8th percentile
Higher debt load relative to assets than 8% of similar nonprofits.
Liabilities / Revenue
55th percentile
Higher debt load relative to revenue than 55% of similar nonprofits.
Net Margin
1st percentile
Higher net margin than 1% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
57th percentile
Faster asset growth than 57% of similar nonprofits.
Revenue Growth
6th percentile
Faster revenue growth than 6% of similar nonprofits.
Assets
Up$226,789,268
Up $31,426,346 (+16%) from 2023
Liabilities
Down$1,521,287
Down $263,410 (-15%) from 2023
Net Assets
Up$225,267,981
Up $31,689,756 (+16%) from 2023
Revenue
Down$2,944,541
Down $3,407,818 (-54%) from 2023
Expenses
Up$18,007,050
Up $8,513,142 (+90%) from 2023
Net Income
Down-$15,062,509
Down $11,920,960 (-379%) from 2023
Most recent year
2025 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
The function of science history institute support company is to benefit and perform some of the functions of the science history institute. This includes the library special collections and development.
To benefit and perform some of the functions of the science history institute.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $213,216,414 | $225,741,929 | ▲ $12,525,515 |
| Savings and Temporary Cash Investments | $464,104 | $742,929 | ▲ $278,825 |
| Investments Other Securities | $227,488 | $304,410 | ▲ $76,922 |
| Total Assets | $213,908,006 | $226,789,268 | ▲ $12,881,262 |
| Liabilities | |||
| Other Liabilities | $1,740,791 | $1,521,287 | ▼ $219,504 |
| Total Liabilities | $1,740,791 | $1,521,287 | ▼ $219,504 |
| Net Assets / Fund Balance | |||
| Net Assets With Donor Restrictions | $190,985,912 | $210,629,941 | ▲ $19,644,029 |
| Net Assets Without Donor Restrictions | $21,181,303 | $14,638,040 | ▼ $6,543,263 |
| Total Net Assets Fund Balance | $212,167,215 | $225,267,981 | ▲ $13,100,766 |
| Total Liabilities and Net Assets / Fund Balance | $213,908,006 | $226,789,268 | ▲ $12,881,262 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2024 | $190,502,295 | $36,000 | ▲ $28,336,854 | $8,750,548 | $210,124,601 |
| 2023 | $173,862,198 | - | ▲ $25,195,433 | $8,555,336 | $190,502,295 |
| 2022 | $157,523,406 | $9,508 | ▲ $24,796,708 | $8,467,424 | $173,862,198 |
| 2021 | $191,221,764 | $9,950 | ▼ $25,577,602 | $8,130,706 | $157,523,406 |
| 2020 | $151,141,445 | $7,100 | ▲ $48,349,994 | $8,276,775 | $191,221,764 |
| Name | Title | Full / Part Time | Other | Total |
|---|---|---|---|---|
| Ponce Hatch | Director, End User Experience | PT | $142,973 | $142,973 |
| Alexis Pedrick | Chief Storyteller | PT | $126,458 | $126,458 |
| Beth Alfaro | Director of Hr | PT | $125,642 | $125,642 |
| Caitlin Martin | Secretary, Director of Communications | PT | $123,890 | $123,890 |
| James Voelkel | Curator of Rare Books, Othmer Library | PT | $114,272 | $114,272 |
| Stephanie Kish | Treasurer, Chief Financial Officer | PT | $114,216 | $114,216 |
| Name | Title |
|---|---|
| Lewis Gasorek | Board Member & Chair |
| David Cole | President & Chief Executive Officer |
| Sharon L Haynie | Board Member & Vice Chair |
| Catherine Sohn | Board Member |
| Cheryl Teich | Board Member |
| Cynthia Cai | Board Member |
| Daniel D Adams | Board Member |
| Frank Lipiecki | Board Member |
| Fred a Middleton | Board Member |
| Jeffrey L Sturchio | Board Member |
| John Henry | Board Member |
| Laurie J Landeau | Board Member |
| Louise Y Palmer | Board Member |
| Mary Tanner | Board Member |
| Michael Desimone | Board Member |
| Nicholas J Kovich | Board Member |
| Octavio Tonatiuh Ramierez-reivich | Board Member |
| Rod Ferguson | Board Member |
| Sam Tharpe | Board Member |
| T Bond Calloway Jr | Board Member |
| Charles Hornstein | Director, It |
| Kevin Cavanaugh | Treasurer, Senior VP, CAO & CFO |
| Michelle Dimeo | VP of Collections and Programs |
| Line Item | Amount |
|---|---|
| Other Expenses | $11,799,109 |
| Grants and Similar Amounts Paid | $4,450,207 |
| Salaries, Compensation, and Employee Benefits | $1,757,734 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Grants to Domestic Orgs | $4,450,207 | - | - | $4,450,207 |
| Other Salaries and Wages | $1,012,632 | $118,939 | - | $1,131,571 |
| Depreciation Depletion | $928,047 | $22,153 | - | $950,200 |
| Occupancy | $270,842 | $8,905 | - | $279,747 |
| Current Officers, Directors, Trustees, and Key Employees | $240,470 | $28,244 | - | $268,714 |
| Other Employee Benefits | $156,613 | $11,801 | - | $168,414 |
| Payroll Taxes | $104,187 | $10,775 | - | $114,962 |
| Fees for Services Other | $87,366 | $2,997 | - | $90,363 |
| Insurance | $72,953 | $7,644 | - | $80,597 |
| Pension Plan Contributions | $66,287 | $7,786 | - | $74,073 |
| Information Technology | $54,067 | $7,731 | - | $61,798 |
| Other Expenses | $47,135 | $409 | - | $47,544 |
| Travel | $22,930 | $10,199 | - | $33,129 |
| Fees for Services Accounting | $10,627 | $2,125 | - | $12,752 |
| Conferences and Meetings | $6,827 | $5,801 | - | $12,628 |
| Fees for Services Legal | $5,605 | $1,121 | - | $6,726 |
| Office Expenses | $5,241 | $1,141 | - | $6,382 |
| Advertising | $310 | $903 | - | $1,213 |
| Total Functional Expenses | $17,757,316 | $249,734 | $0 | $18,007,050 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| Science History Institute | Philadelphia, PA | 501(c)(3) | General Assistance | $4,450,207 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Liability | Amount |
|---|---|
| Due to Science History Institute | $1,521,287 |
“Lewis gasorek and laurie landeau have a business relationship.”
“All members of the science history institute support company are also members of science history institute board.”
“Board members are selected by the nominating committee of the board and are approved by the full board. The two founding member organizations, american chemical society and the american institute of chemical engineers, may appoint up to 5 directors in total.”
“All committee and board decisions are documented and recorded.”
“The board receives a copy and reviews the form 990 prior to its filing with irs. Recommended changes are approved prior to its filing with irs.”
“Science history institute support company follows the conflict of interest policy adopted by science history institute. Each board member, officer and key employee are required to submit any potential conflict to the audit committee which reviews the conflict and then sends it on to the full board for final review and approval.”
“The compensation of the president/ceo is reviewed and approved by the executive committee and full board and is based on comparable data for similar nonprofit organizations. Form 990, part vi, line 15b (other officer or key employee compensation): the president determines the compensation for other officers and key employees using comparable organizations' salaries as a guide based on information from a consultant.”
“The tax returns and other required documents are available upon request.”
“Salaries for all employees of science history institute and science history institute support company are paid through science history institute.”
“The organization has a committee with oversight of the audit of its financial statements. This has not changed since the prior year.”
“The collections, which were acquired through purchases and contributions since science history institute company's inception, are not recognized as assets on the consolidated statement of financial position. Purchases of collection items are recorded as decreases in unrestricted net assets in the year in which the items are acquired or as donor-restricted net assets if the assets used to purchase the items are restricted by donors.”
“Science history institute support company has a collection of donated and purchased books, manuscripts, artifacts and scientific instruments that are held for education, research, scientific and curatorial purposes. Each of the items is cataloged, preserved and cared for, and activities verifying their existence and assessing their condition are performed continuously. The collections are subject to a policy that requires proceeds from their sales, if any, to be used to acquire other items for collections. The science history institute also has several collections of art held for exhibition, preservation, education and research purposes.”
“Science history institute support company's endowments consist of various individual funds established for a variety of purposes. Net assets associated with endowment funds are classified and reported based on the existence or absence of donor-imposed restrictions.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO BENEFIT AND PERFORM SOME OF THE FUNCTIONS OF THE SCIENCE HISTORY INSTITUTE. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 903 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 310 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 1213 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | STEPHANIE KISH |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2158738276 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 315 CHESTNUT STREET |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | PHILADELPHIA |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | PA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 19106 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 1 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 28244 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 240470 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 268714 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 5801 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 6827 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 12628 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 1 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 0 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 4450207 |
| IRS990/CYInvestmentIncomeAmt | 0 | 2943365 |
| IRS990/CYOtherExpensesAmt | 0 | 11799109 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 1176 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -15062509 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1757734 |
| IRS990/CYTotalExpensesAmt | 0 | 18007050 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 2944541 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 1 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 22153 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 928047 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 950200 |
| IRS990/Desc | 0 | THE DONALD F. AND MILDRED TOPP OTHMER LIBRARY OF CHEMICAL HISTORY IS AN INDEPENDENT RESEARCH LIBRARY ENCOMPASSING THE HISTORY OF CHEMISTRY AND RELATED SCIENCES, TECHNOLOGIES, AND INDUSTRIES. OUR LIBRARY HOUSES MORE THAN 150,000 PRINT VOLUMES, INCLUDING RARE BOOKS AND MANUSCRIPTS, ARCHIVAL MATERIALS, MODERN BOOKS AND JOURNALS, AND HISTORICAL PHOTOGRAPHS. THESE EXTENSIVE COLLECTIONS SPAN NEARLY SIX MILES OF SHELVES AND OFFER AN UNRIVALED RESOURCE FOR RESEARCHERS, WITH MODERN BOOKS AND JOURNALS IN 15 LANGUAGES, INCLUDING HARD-TO-FIND SOURCES LIKE DYE SAMPLE BOOKS AND TECHNICAL REPORTS. WE ALSO HAVE ONE OF THE GREATEST COLLECTIONS OF RARE BOOKS ON CHEMISTRY IN THE WORLD, WITH MORE THAN 7,000 VOLUMES FROM THE 15TH TO 19TH CENTURIES. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 190985912 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 210629941 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 2205896 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 1 |
| IRS990/FederalGrantAuditPerformedInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 1 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 2125 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 10627 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 12752 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 1121 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 5605 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 6726 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 2997 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 87366 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 90363 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 3.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 13 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 14 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 15 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 16 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 17 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 18 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 19 | 30.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 20 | 30.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 21 | 35.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 22 | 30.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 23 | 15.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 24 | 35.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 25 | 35.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 26 | 35.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 27 | 35.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 28 | 10.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 10.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 10.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 23 | 25.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 24 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 25 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 26 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 27 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 28 | 30.00 |
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| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 4 | X |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
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| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 46127 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 14839 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 21 | 31088 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 22 | 41569 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 23 | 22277 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 24 | 26773 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 25 | 17949 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 26 | 8834 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 27 | 16008 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 28 | 7986 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | LEWIS GASOREK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | SHARON L HAYNIE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | DANIEL D ADAMS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | CYNTHIA CAI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | T BOND CALLOWAY JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | MICHAEL DESIMONE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | ROD FERGUSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | JOHN HENRY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | NICHOLAS J KOVICH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | LAURIE J LANDEAU |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | FRANK LIPIECKI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | FRED A MIDDLETON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | LOUISE Y PALMER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | OCTAVIO TONATIUH RAMIEREZ-REIVICH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | CATHERINE SOHN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | JEFFREY L STURCHIO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | MARY TANNER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | CHERYL TEICH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | SAM THARPE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | DAVID COLE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | STEPHANIE KISH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | CAITLIN MARTIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | KEVIN CAVANAUGH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 23 | MICHELLE DIMEO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 24 | CHARLES HORNSTEIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 25 | PONCE HATCH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 26 | BETH ALFARO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 27 | ALEXIS PEDRICK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 28 | JAMES VOELKEL |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 26 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 27 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 28 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 426732 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 99377 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 21 | 92802 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 22 | 267150 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 23 | 179825 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 24 | 142349 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 25 | 125024 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 26 | 116808 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 27 | 110450 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 28 | 106286 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | BOARD MEMBER & CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | BOARD MEMBER & VICE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | PRESIDENT & CHIEF EXECUTIVE OFFICER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | TREASURER, CHIEF FINANCIAL OFFICER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | SECRETARY, DIRECTOR OF COMMUNICATIONS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | TREASURER, SENIOR VP, CAO & CFO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | VP OF COLLECTIONS AND PROGRAMS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | DIRECTOR, IT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 25 | DIRECTOR, END USER EXPERIENCE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 26 | DIRECTOR OF HR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 27 | CHIEF STORYTELLER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 28 | CURATOR OF RARE BOOKS, OTHMER LIBRARY |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1997 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 1992439 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 19 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 4450207 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 4450207 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 1 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 17283583 |
| IRS990/GrossReceiptsAmt | 0 | 18235685 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 19 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 7731 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 54067 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 61798 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 7644 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 72953 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 80597 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 950926 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 950926 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 227488 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 304410 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 213216414 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 225741929 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | PA |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 15291144 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE FUNCTION OF SCIENCE HISTORY INSTITUTE SUPPORT COMPANY IS TO BENEFIT AND PERFORM SOME OF THE FUNCTIONS OF THE SCIENCE HISTORY INSTITUTE. THIS INCLUDES THE LIBRARY SPECIAL COLLECTIONS AND DIGITIZATION. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 212167215 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 225267981 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 1992439 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 1992439 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 28163275 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 21181303 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 14638040 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 8905 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 270842 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 279747 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 1141 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 5241 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 6382 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 11801 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 156613 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 168414 |
| IRS990/OtherExpensesGrp/Desc | 0 | COLLECTION ACQUISITIONS |
| IRS990/OtherExpensesGrp/Desc | 1 | PROGRAM EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 2 | COLLECTIONS STORAGE |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 1060 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 409 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 10143481 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 71489 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 47135 |
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