Liabilities / Assets
31st percentile
Higher debt load relative to assets than 31% of similar nonprofits.
EIN 04-2673426 • 501(c)3 • New York, NY
Profile
To promote & support the work of one of the world's greatest research libraries, the british library in london, uk.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
31st percentile
Higher debt load relative to assets than 31% of similar nonprofits.
Liabilities / Revenue
42nd percentile
Higher debt load relative to revenue than 42% of similar nonprofits.
Net Margin
4th percentile
Higher net margin than 4% of similar nonprofits.
Top Officer Pay
57th percentile
Higher top officer pay than 57% of similar nonprofits.
Top officer pay equals 14.0% of source-year revenue.
Asset Growth
19th percentile
Faster asset growth than 19% of similar nonprofits.
Revenue Growth
84th percentile
Faster revenue growth than 84% of similar nonprofits.
Assets
Down$3,326,386
Down $322,966 (-8.8%) from 2023
Liabilities
Down$18,588
Down $643 (-3.3%) from 2023
Net Assets
Down$3,307,798
Down $322,323 (-8.9%) from 2023
Revenue
Up$563,687
Up $233,546 (+71%) from 2023
Expenses
Up$975,421
Up $310,007 (+47%) from 2023
Net Income
Down-$411,734
Down $76,461 (-23%) from 2023
Most recent year
2024 • Form 990XML pending. An XML filing is linked for this year, but detailed extraction is still pending.
The latest 2024 filing currently has linked XML that has not been fully parsed yet. Showing the latest detailed filing from 2023 below.
To promote & support the work of one of the world's greatest research libraries, the british library in london, uk.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $2,016,263 | $2,344,080 | ▲ $327,817 |
| Savings and Temporary Cash Investments | $700,269 | $615,733 | ▼ $84,536 |
| Pledges and Grants Receivable | $809,800 | $409,800 | ▼ $400,000 |
| Cash and Non-Interest-Bearing Accounts | - | $33,563 | - |
| Accounts Receivable | $23,900 | $27,675 | ▲ $3,775 |
| Prepaid Expenses and Deferred Charges | - | $231 | - |
| Land, Buildings, and Equipment, Net | $0 | - | - |
| Total Assets | $4,327,906 | $3,649,352 | ▼ $678,554 |
| Other Assets Total | $777,674 | $218,270 | ▼ $559,404 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $16,030 | $18,243 | ▲ $2,213 |
| Deferred Revenue | $24,021 | $988 | ▼ $23,033 |
| Total Liabilities | $40,051 | $19,231 | ▼ $20,820 |
| Net Assets / Fund Balance | |||
| Net Assets With Donor Restrictions | $3,290,961 | $3,299,661 | ▲ $8,700 |
| Net Assets Without Donor Restrictions | $996,894 | $330,460 | ▼ $666,434 |
| Total Net Assets Fund Balance | $4,287,855 | $3,630,121 | ▼ $657,734 |
| Total Liabilities and Net Assets / Fund Balance | $4,327,906 | $3,649,352 | ▼ $678,554 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Assets Org | $216,970 | - | - |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2023 | $3,762,829 | $146,644 | ▲ $297,538 | $425,116 | $3,781,895 |
| 2022 | $2,822,269 | $1,574,097 | ▲ $157,147 | $231,280 | $4,322,233 |
| 2021 | $2,661,546 | $76,300 | ▲ $364,033 | $279,610 | $2,822,269 |
| 2020 | $2,492,786 | $187,192 | ▲ $297,173 | $315,605 | $2,661,546 |
| 2019 | $2,260,168 | $43,100 | ▲ $399,955 | $210,437 | $2,492,786 |
| Name | Title | Full / Part Time | Base | Total |
|---|---|---|---|---|
| Elizabeth Berkowitz | Executive Director | FT | $75,333 | $75,333 |
| Name | Title |
|---|---|
| R Dyke Benjamin | Chairman & Treasurer |
| Barbara a Shailor | President |
| Felicia Shapiro | Vice President |
| Bruce Crawford | Board of Trustees |
| Gwendolyn Van Paasschen | Board of Trustees |
| James P Spica | Board of Trustees |
| Justin Zaremby | Board of Trustees |
| Katherine Ashton | Board of Trustees |
| Nancy Boehm | Board of Trustees |
| Roly Keating | Board of Trustees |
| Ruth Robinson | Board of Trustees |
| Simon Eccles | Board of Trustees |
| Susan Jaffe Tane | Board of Trustees |
| William P Stoneman | Board of Trustees |
| Christine Zuromskis | Board of Trustees (until Aug. 2023) |
| Evalyn Lee | Secretary |
| Line Item | Amount |
|---|---|
| Grants and Similar Amounts Paid | $373,555 |
| Other Expenses | $166,263 |
| Salaries, Compensation, and Employee Benefits | $125,596 |
| Total Fundraising Expense | $37,418 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Foreign Grants | $348,555 | - | - | $348,555 |
| Current Officers, Directors, Trustees, and Key Employees | $38,420 | $21,847 | $15,067 | $75,334 |
| Office Expenses | $47,189 | $4,895 | $9,075 | $61,159 |
| Fees for Services Accounting | - | $52,813 | - | $52,813 |
| Other Salaries and Wages | $20,587 | $11,706 | $8,073 | $40,366 |
| Grants to Domestic Individuals | $25,000 | - | - | $25,000 |
| Payroll Taxes | $5,047 | $2,870 | $1,979 | $9,896 |
| Information Technology | $3,132 | $2,855 | $3,224 | $9,211 |
| Occupancy | - | $9,178 | - | $9,178 |
| Fees for Service Investment Mgmnt Fees | - | $7,126 | - | $7,126 |
| Conferences and Meetings | $6,134 | - | - | $6,134 |
| Travel | $4,052 | $1,737 | - | $5,789 |
| Other Expenses | $4,899 | $3,388 | - | $4,899 |
| Insurance | - | $4,566 | - | $4,566 |
| Total Functional Expenses | $505,015 | $122,981 | $37,418 | $665,414 |
| Region | Activity | Services | Offices | Employees | Spending |
|---|---|---|---|---|---|
| Europe | Grantmaking | - | 0 | 0 | $348,555 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“The executive committee receives the form 990 prior to filing and is invited to review the return and provide any comments to the president and treasurer. The president and treasurer review the form 990 prior to filing the return.”
“All board members are required to sign a conflict of interest statement and disclose any potential conflicts of interest annually. The executive committee reviews all of the conflict of interest statements for compliance with the conflict of interest policy annually.”
“The atbl makes its governing documents (article of incorporation and by-laws), conflict of interest policy and financial statements available to the public upon request.”
“The american trust for the british library is a not-for-profit organization whose purpose is to promote and support the work of one of the world's greatest research libraries. The atbl seeks to promote transatlantic understanding through related events, lectures, and discussion in the usa and the uk, as well as providing incremental financial and gifts-in-kind support for the british library's collecting, preservation and outreach activities. The trust was founded in 1979 and its supported through the generosity of its increasingly wide membership in the united states and the united kingdom.”
“Atbl's gifts-in-kind program has been established to solicit, receive, manage and dispose of gifted assets for the benefit of the british library and various not-for-profit entities. The gifts include various types of personal property to be utilized by these organizations in furtherance of atbl's mission.”
“The board designated endowment principal is held in a trust and the interest is approved and sent to the british library at the discretion of the board. The term endowment came from bernard breslauer and is used for the acquisition of materials for the british library. The permanently restricted endowment cannot be spent, and the earnings on the corpus may only be spent for the exclusive purpose of acquisition, maintenance and conservation of materials relating to free masonry and similar organizations. Net assets with temporary donor restrictions consist of investment return and contributions with donor-imposed stipulations that may or will be met either by actions of atbl and/or the passage of time.”
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/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 16030 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 18243 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 23900 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 27675 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO PROMOTE & SUPPORT THE WORK OF ONE OF THE WORLD'S GREATEST RESEARCH LIBRARIES, THE BRITISH LIBRARY IN LONDON, UK. |
| IRS990/AllOtherContributionsAmt | 0 | 262409 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | THOMAS & ASSOCIATES NICOLE NATALE |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6318884117 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 175 MAIN STREET SUITE 2 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | BABYLON |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 11702 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 33563 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 1 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 15067 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 21847 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 38420 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 75334 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 0 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 6134 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 6134 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 262409 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 373555 |
| IRS990/CYInvestmentIncomeAmt | 0 | 67732 |
| IRS990/CYOtherExpensesAmt | 0 | 166263 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -335273 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 125596 |
| IRS990/CYTotalExpensesAmt | 0 | 665414 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 37418 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 330141 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 24021 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 988 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/Desc | 0 | BRITISH LIBRARY SUPPORT: GRANTS TO BRITISH LIBRARY, TRIPS, LECTURES, RARE BOOK VIEWING, NEWSLETTERS, REPRINTS OF LECTURES, ANNUAL AND EXECUTIVE COMMITTEE MEETINGS. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 3290961 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 3299661 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 2 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 348555 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 52813 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 52813 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 7126 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 7126 |
| IRS990/ForeignActivitiesInd | 0 | 1 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignGrantsGrp/ProgramServicesAmt | 0 | 348555 |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 348555 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 3.00 |
| 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 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| 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/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| 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/PersonNm | 0 | R DYKE BENJAMIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | BARBARA A SHAILOR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | FELICIA SHAPIRO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | EVALYN LEE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | KATHERINE ASHTON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | NANCY BOEHM |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | BRUCE CRAWFORD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | SIMON ECCLES |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | ROLY KEATING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | RUTH ROBINSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | JAMES P SPICA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | WILLIAM P STONEMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | SUSAN JAFFE TANE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | GWENDOLYN VAN PAASSCHEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | JUSTIN ZAREMBY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | CHRISTINE ZUROMSKIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | ELIZABETH BERKOWITZ |
| 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 | 75333 |
| 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/TitleTxt | 0 | CHAIRMAN & TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | BOARD OF TRUSTEES |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | BOARD OF TRUSTEES (UNTIL AUG. 2023) |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | EXECUTIVE DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/Form990TFiledInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1979 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 327 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 16 |
| IRS990/GrantAmt | 0 | 348555 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 25000 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 25000 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 103343 |
| IRS990/GrossReceiptsAmt | 0 | 433157 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 16 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 3224 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 2855 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 3132 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 9211 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 4566 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 4566 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 67405 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 67405 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 2016263 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 2344080 |
| IRS990/IRPDocumentCnt | 0 | 10 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 0 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | DC |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 103016 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | SEE SCHEDULE O. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 1 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 4287855 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 3630121 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 327 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 327 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 236943 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 996894 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 330460 |
| IRS990/NoncashContributionsAmt | 0 | 17547 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 9178 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 9178 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 9075 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 4895 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 47189 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 61159 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 777674 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 218270 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | NEWSLETTER, FILING FEES |
| IRS990/OtherExpensesGrp/Desc | 1 | LODGING |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 3388 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 2000 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 4899 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 5388 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 4899 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 8073 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 11706 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 20587 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 40366 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 1979 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 2870 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 5047 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 9896 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 809800 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 409800 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 231 |
| IRS990/PrincipalOfficerNm | 0 | BARBARA A SHAILOR |
| IRS990/PriorPeriodAdjustmentsAmt | 0 | -559404 |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | IN 2023, THE ATBL PROVIDED (5) FELLOWSHIP GRANTS TO SUPPORT RESEARCH AT THE BRITISH LIBRARY AND AT AN AMERICAN PARTNER ORGANIZATION. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 156460 |
| IRS990/ProgSrvcAccomActy2Grp/GrantAmt | 0 | 25000 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1686876 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 231296 |
| IRS990/PYInvestmentIncomeAmt | 0 | 111400 |
| IRS990/PYOtherExpensesAmt | 0 | 124823 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 1330650 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 111507 |
| IRS990/PYTotalExpensesAmt | 0 | 467626 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 1798276 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -335273 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 0 |
| IRS990/ReportOtherAssetsInd | 0 | 1 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 700269 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 615733 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 262409 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1686876 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 170092 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 318032 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 163754 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 2601163 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 67405 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 38657 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 38923 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 39969 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 54557 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 239511 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.49180 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.44270 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 1396929 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 1204234 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 262409 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1686876 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 170092 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 318032 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 163754 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 2601163 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 2840674 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleD/BoardDesignatedBalanceEOYPct | 0 | 0.12710 |
| IRS990ScheduleD/CollectionUsedPreservationInd | 0 | X |
| IRS990ScheduleD/CollUsedLoanOrExchProgInd | 0 | X |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 3762829 |
| IRS990ScheduleD/CYEndwmtFundGrp/ContributionsAmt | 0 | 146644 |
| IRS990ScheduleD/CYEndwmtFundGrp/EndYearBalanceAmt | 0 | 3781895 |
| IRS990ScheduleD/CYEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 297538 |
| IRS990ScheduleD/CYEndwmtFundGrp/OtherExpendituresAmt | 0 | 425116 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 2822269 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/ContributionsAmt | 0 | 1574097 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 4322233 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 157147 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 231280 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 2661546 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/ContributionsAmt | 0 | 76300 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 2822269 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 364033 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 279610 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 2492786 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/ContributionsAmt | 0 | 187192 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 2661546 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 297173 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 315605 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 2260168 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/ContributionsAmt | 0 | 43100 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 2492786 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 399955 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/OtherExpendituresAmt | 0 | 210437 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | 0 |
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