Liabilities / Assets
30th percentile
Higher debt load relative to assets than 30% of similar nonprofits.
EIN 04-3387698 • 501(c)3 • Marlborough, MA
Profile
The massachusetts library system, a state-supported collaborative, fosters cooperation, communication, innovation, and sharing among member libraries of all types. The massachusetts library system promotes equitable access to excellent library services and resources for all who live, work, or study in massachusetts.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
30th percentile
Higher debt load relative to assets than 30% of similar nonprofits.
Liabilities / Revenue
18th percentile
Higher debt load relative to revenue than 18% of similar nonprofits.
Net Margin
71st percentile
Higher net margin than 71% of similar nonprofits.
Top Officer Pay
44th percentile
Higher top officer pay than 44% of similar nonprofits.
Top officer pay equals 1.0% of source-year revenue.
Asset Growth
86th percentile
Faster asset growth than 86% of similar nonprofits.
Revenue Growth
57th percentile
Faster revenue growth than 57% of similar nonprofits.
Assets
Up$11,366,833
Up $2,444,065 (+27%) from 2024
Liabilities
Down$608,687
Down $235,163 (-28%) from 2024
Net Assets
Up$10,758,146
Up $2,679,228 (+33%) from 2024
Revenue
Up$15,334,761
Up $1,386,855 (+9.9%) from 2024
Expenses
Down$12,655,533
Down $48,319 (-0.4%) from 2024
Net Income
Up$2,679,228
Up $1,435,174 (+115%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
To operate a regional library system and to provide, support and promote library programs, services, and materials in massachusetts.
To provide support and materials to regional libraries and provide support and promotion to library programs, serving all library patrons in the massachusetts area.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Prepaid Expenses and Deferred Charges | $4,303,597 | $6,867,052 | ▲ $2,563,455 |
| Investments Other Securities | $1,438,951 | $1,441,536 | ▲ $2,585 |
| Savings and Temporary Cash Investments | $437,095 | $1,212,693 | ▲ $775,598 |
| Cash and Non-Interest-Bearing Accounts | $1,952,070 | $1,191,595 | ▼ $760,475 |
| Accounts Receivable | $80,476 | $106,675 | ▲ $26,199 |
| Land, Buildings, and Equipment, Net | $37,712 | $37,060 | ▼ $652 |
| Total Assets | $8,922,768 | $11,366,833 | ▲ $2,444,065 |
| Other Assets Total | $672,867 | $510,222 | ▼ $162,645 |
| Liabilities | |||
| Other Liabilities | $674,864 | $520,868 | ▼ $153,996 |
| Accounts Payable and Accrued Expenses | $168,986 | $87,819 | ▼ $81,167 |
| Total Liabilities | $843,850 | $608,687 | ▼ $235,163 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $6,706,738 | $9,385,966 | ▲ $2,679,228 |
| Net Assets With Donor Restrictions | $1,372,180 | $1,372,180 | → $0 |
| Total Net Assets Fund Balance | $8,078,918 | $10,758,146 | ▲ $2,679,228 |
| Total Liabilities and Net Assets / Fund Balance | $8,922,768 | $11,366,833 | ▲ $2,444,065 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | $37,060 | $459,370 | $496,430 |
| Other Securities | $1,441,536 | - | - |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Sarah Sogigian | Executive Director | FT | $136,462 | $16,283 | $152,745 |
| Elizabeth Meaden | Business/hr Director | FT | $110,847 | $16,376 | $127,223 |
| Terence Mcquown | Consulting and Training Di | FT | $105,868 | $21,269 | $127,137 |
| Scott Kehoe | Library Resources Director | FT | $103,901 | $22,405 | $126,306 |
| Name | Title |
|---|---|
| Hope Houston | Past President |
| Allyson Malik | President |
| Shannon Compton | Vice President |
| Claudia Palframan | Director |
| Clayton Cheever | Director |
| Kate Gomes | Director |
| Lisa Downing | Director |
| Maria Palacio | Director |
| Matt Bejune | Director |
| Megan Brooks | Director |
| Nicole Daviau | Director |
| Robert Defabrizio | Director |
| Thomas Raffensperger | Director |
| Miki Wolfe | Clerk |
| Maureen Amyot | Ex-officio |
| Sarah Jackson | Ex-officio |
| Christina Dominique-pierre | Treasurer |
| Line Item | Amount |
|---|---|
| Other Expenses | $9,885,143 |
| Salaries, Compensation, and Employee Benefits | $2,770,390 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $1,773,658 | $363,279 | - | $2,136,937 |
| Other Employee Benefits | $264,920 | $54,261 | - | $319,181 |
| Fees for Services Other | - | $278,019 | - | $278,019 |
| Occupancy | $188,494 | $36,836 | - | $225,330 |
| Payroll Taxes | $168,081 | $34,426 | - | $202,507 |
| Pension Plan Contributions | $92,765 | $19,000 | - | $111,765 |
| Other Expenses | $81,298 | - | - | $81,298 |
| Travel | $65,982 | - | - | $65,982 |
| All Other Expenses | $44,176 | $2,098 | - | $46,274 |
| Fees for Services Accounting | - | $26,893 | - | $26,893 |
| Office Expenses | - | $25,434 | - | $25,434 |
| Depreciation Depletion | $16,151 | $3,308 | - | $19,459 |
| Fees for Services Legal | - | $18,889 | - | $18,889 |
| Total Functional Expenses | $11,793,090 | $862,443 | $0 | $12,655,533 |
| Line Item | Amount |
|---|---|
| Expenses per Audited Statements | $12,655,533 |
| Total Expenses per Audited Statements | $12,655,533 |
| Total Expenses per Form 990 | $12,655,533 |
| Expenses Not Reported on Financial Statements | $0 |
| Expenses Not Reported on Form 990 | $0 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Liability | Amount |
|---|---|
| Right of Use Liability | $520,868 |
“The organization is organized as a non-stock corporation with a board of directors instead of members or stockholders.”
“The organization is organized as a non-stock corporation with a board of directors instead of members or stockholders.”
“A copy of the draft 990 return is given to the administrator and the board of directors for review. Once reviewed and approved, any changes are made and the final return is completed.”
“Directors, officers and council members are required to fully disclose the nature of the interest and withdraw from discussion. Meeting minutes record such disclosures and abstensions.”
“The organization's board of directors determines compensation of management based on performance and availability of funding.”
“The organization's governing documents can be viewed on guidestar.org and are also available upon request.”
“The organization's governing documents can be viewed on guidestar.org and are also available upon request.”
“The process has not changed from the prior year”
“The agency is recognized as an organization exempt from federal income taxes under section 501(c)(3) of the internal revenue code (the "code") whereby only unrelated business income, as defined by section 512(a)(1) of the code, is subject to federal income tax. In addition, the agency has been determined by the internal revenue service not to be a private foundation within the meaning of section 509(a) of the code. The agency recognizes and measures its unrecognized tax positions in accordance with fasb asc 740, income taxes. Under that guidance the agency assesses the likelihood, based on their technical merit, that tax positions will be sustained upon examination based on the facts, circumstances and information available at the end of each period. The measurement of unrecognized tax positions is adjusted when new information is available, or when an event occurs that requires a change. Interest and penalties associated with unrecognized tax positions are classified as additional income taxes in the combined statement of activities. The agency did not identify any uncertain tax positions in 2025 or 2024. The agency is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.”
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 | 168986 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 87819 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 80476 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 106675 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO PROVIDE SUPPORT AND MATERIALS TO REGIONAL LIBRARIES AND PROVIDE SUPPORT AND PROMOTION TO LIBRARY PROGRAMS, SERVING ALL LIBRARY PATRONS IN THE MASSACHUSETTS AREA. |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 2098 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 44176 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 46274 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | SARAH SOGIGIAN EXECUTIVE DIRECTOR |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5083572121 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 33 BOSTON POST ROAD WEST 400 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | MARLBOROUGH |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 01752 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 1952070 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 1191595 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 14150000 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 207166 |
| IRS990/CYOtherExpensesAmt | 0 | 9885143 |
| IRS990/CYOtherRevenueAmt | 0 | 94762 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 882833 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 2679228 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 2770390 |
| IRS990/CYTotalExpensesAmt | 0 | 12655533 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 15334761 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 1 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 3308 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 16151 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 19459 |
| IRS990/Desc | 0 | THE MASSACHUSETTS LIBRARY SYSTEM (MLS) PROVIDES SERVICES TO ABOUT 1,600 MASSACHUSETTS LIBRARIES OF ALL TYPES AND SIZES THROUGHOUT THE COMMONWEALTH. MLS WAS ESTABLISHED IN JULY 2010 WITH THE FOLLOWING MISSION: THE MASSACHUSETTS LIBRARY SYSTEM, A STATE-SUPPORTED COLLABORATIVE, FOSTERS COOPERATION, COMMUNICATION, INNOVATION, AND SHARING AMONG MEMBER LIBRARIES OF ALL TYPES. THE MASSACHUSETTS LIBRARY SYSTEM PROMOTES EQUITABLE ACCESS TO EXCELLENT LIBRARY SERVICES AND RESOURCES FOR ALL WHO LIVE, WORK, OR STUDY IN MASSACHUSETTS. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1372180 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 1372180 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 68 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 11793090 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 26893 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 26893 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 18889 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 18889 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 278019 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 278019 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 2 | X |
| 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/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | 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/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 16283 |
| 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 | 22405 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 16376 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 21269 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | SARAH SOGIGIAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | HOPE HOUSTON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | SHANNON COMPTON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | ALLYSON MALIK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | CLAYTON CHEEVER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | NICOLE DAVIAU |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | SARAH JACKSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | ROBERT DEFABRIZIO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | MAUREEN AMYOT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | MATT BEJUNE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | MEGAN BROOKS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | LISA DOWNING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | KATE GOMES |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | THOMAS RAFFENSPERGER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | CHRISTINA DOMINIQUE-PIERRE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | MARIA PALACIO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | CLAUDIA PALFRAMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | MIKI WOLFE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | SCOTT KEHOE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | ELIZABETH MEADEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | TERENCE MCQUOWN |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 136462 |
| 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 | 103901 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 110847 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 105868 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PAST PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | EX-OFFICIO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | EX-OFFICIO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | CLERK |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | LIBRARY RESOURCES DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | BUSINESS/HR DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | CONSULTING AND TRAINING DI |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1997 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 15 |
| IRS990/GovernmentGrantsAmt | 0 | 14150000 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 15334761 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 15 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 4 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 207166 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 207166 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 1438951 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 1441536 |
| IRS990/IRPDocumentCnt | 0 | 32 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
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| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 37712 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 37060 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 496430 |
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| 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 | THE MASSACHUSETTS LIBRARY SYSTEM, A STATE-SUPPORTED COLLABORATIVE, FOSTERS COOPERATION, COMMUNICATION, INNOVATION, AND SHARING AMONG MEMBER LIBRARIES OF ALL TYPES. THE MASSACHUSETTS LIBRARY SYSTEM PROMOTES EQUITABLE ACCESS TO EXCELLENT LIBRARY SERVICES AND RESOURCES FOR ALL WHO LIVE, WORK, OR STUDY IN MASSACHUSETTS. |
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| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
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| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 10758146 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
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| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 9385966 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 36836 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 188494 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 225330 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 25434 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 25434 |
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| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 672867 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 510222 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
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| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 264920 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 319181 |
| IRS990/OtherExpensesGrp/Desc | 0 | CONTRACTUAL PROGRAM SER |
| IRS990/OtherExpensesGrp/Desc | 1 | BOOKS & ELECTRONIC DATA |
| IRS990/OtherExpensesGrp/Desc | 2 | OTHER PROGRAM EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 3 | SUPPLIES AND EQUIPMENT |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 6624604 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 2244073 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 228888 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 81298 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 6624604 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 2244073 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 228888 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 81298 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 674864 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 520868 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 519200 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | OTHER REVENUE |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 94762 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 94762 |
| IRS990/OtherRevenueTotalAmt | 0 | 94762 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 363279 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1773658 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 2136937 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 34426 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 168081 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 202507 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 19000 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 92765 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 111765 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 4303597 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 6867052 |
| IRS990/PrincipalOfficerNm | 0 | ALYSON MALIK |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 519200 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 519200 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 519200 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | MEMBER SERVICE FEES |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | MHEC REVENUE |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | OTHER PROGRAM REVENUE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 440957 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 363941 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 77935 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 440957 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 363941 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 77935 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 12467200 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 118088 |
| IRS990/PYOtherExpensesAmt | 0 | 9641597 |
| IRS990/PYOtherRevenueAmt | 0 | 123450 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 1239168 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 1244054 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 3062255 |
| IRS990/PYTotalExpensesAmt | 0 | 12703852 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 13947906 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 2679228 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 1 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 977595 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 437095 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 1212693 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 14150000 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 12467200 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 11059000 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 10637000 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 9695000 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 58008200 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 207166 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 118088 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 43070 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 2884 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 3361 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 374569 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.99360 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.99660 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 58008200 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 14150000 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 12467200 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 11059000 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 10637000 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 9695000 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 58008200 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 58382769 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
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