Liabilities / Assets
78th percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 20-4860569 • 501(c)3 • Ossining, NY
Profile
To supplement programs run by the ossining public library.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
78th percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
78th percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
9th percentile
Higher net margin than 9% of similar nonprofits.
Top Officer Pay
97th percentile
Higher top officer pay than 97% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
36th percentile
Faster asset growth than 36% of similar nonprofits.
Revenue Growth
11th percentile
Faster revenue growth than 11% of similar nonprofits.
Assets
Down$286,325
Down $13,222 (-4.4%) from 2024
Liabilities
Flat$0
Flat from 2024
Net Assets
Down$286,325
Down $13,222 (-4.4%) from 2024
Revenue
Down$27,568
Down $27,656 (-50%) from 2024
Expenses
Up$40,790
Up $833 (+2.1%) from 2024
Net Income
Down-$13,222
Down $28,489 (-187%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
| Balance Sheet | Operations | |||||
|---|---|---|---|---|---|---|
| Year | Assets | Liabilities | Net Assets | Revenue | Expenses | Net Income |
| 2025Detailed filing. Detailed filing data is available for this year. | $2.86 | $0.00 | $2.86 | $0.28 | $0.41 | $0.13 |
| 2024Detailed filing. Detailed filing data is available for this year. | $3.00 | $0.00 | $3.00 | $0.55 | $0.40 | $0.15 |
| 2023Detailed filing. Detailed filing data is available for this year. | $2.84 | $0.00 | $2.84 | $2.68 | $0.05 | $2.62 |
To supplement programs run by the ossining public library.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments Other Securities | $242,210 | $249,877 | ▲ $7,667 |
| Cash and Non-Interest-Bearing Accounts | $57,337 | $36,448 | ▼ $20,889 |
| Total Assets | $299,547 | $286,325 | ▼ $13,222 |
| Liabilities | |||
| Total Liabilities | $0 | $0 | → $0 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $299,547 | $286,325 | ▼ $13,222 |
| Total Net Assets Fund Balance | $299,547 | $286,325 | ▼ $13,222 |
| Total Liabilities and Net Assets / Fund Balance | $299,547 | $286,325 | ▼ $13,222 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Securities | $249,877 | - | - |
| Name | Title |
|---|---|
| Leslie Allen | President |
| Marlene Cheatham | Trustee |
| Pamela Thornton | Secretary |
| Steve Alpert | Treasurer |
| Line Item | Amount |
|---|---|
| Grants and Similar Amounts Paid | $38,384 |
| Other Expenses | $2,406 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Grants to Domestic Orgs | $38,384 | - | - | $38,384 |
| Fees for Services Accounting | - | $1,800 | - | $1,800 |
| Other Expenses | $427 | - | - | $427 |
| Total Functional Expenses | $38,990 | $1,800 | $0 | $40,790 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| Ossining Public Library | Ossining, NY | - | To Help With Programs Run by the Library | $38,384 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“Treasurer reviews 990 comparing it to the organizations financials, if all is in order the return is then authorized to be e-filed.”
“Financial statements and governing documents are provided upon request.”
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 | true |
| IRS990/AcctCompileOrReviewBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | TO SUPPLEMENT PROGRAMS RUN BY THE OSSINING PUBLIC LIBRARY. |
| IRS990/AllOtherContributionsAmt | 0 | 17600 |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | STEVE ALPERT |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 9149412416 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 53 CROTON AVENUE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | OSSINING |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 10562 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 57337 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 36448 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | false |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 17600 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 38384 |
| IRS990/CYInvestmentIncomeAmt | 0 | 9968 |
| IRS990/CYOtherExpensesAmt | 0 | 2406 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -13222 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 40790 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 27568 |
| IRS990/DAFExcessBusinessHoldingsInd | 0 | false |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/Desc | 0 | TO SUPPLEMENT PROGRAMS RUN BY THE OSSINING PUBLIC LIBRARY. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DistributionToDonorInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 38990 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 1800 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 1800 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | MARLENE CHEATHAM |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | LESLIE ALLEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | STEVE ALPERT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | PAMELA THORNTON |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | SECRETARY |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 2005 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 4 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 38384 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 38384 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | true |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 27568 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 0 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 9968 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 9968 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 242210 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 249877 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | NY |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingCashInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | TO SUPPLEMENT PROGRAMS RUN BY THE OSSINING PUBLIC LIBRARY. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 299547 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 286325 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 299547 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 286325 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | PAYPAL AND BANK FEES |
| IRS990/OtherExpensesGrp/Desc | 1 | NYS FILING FEE |
| IRS990/OtherExpensesGrp/Desc | 2 | ADMIN EXPENSES |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 54 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 125 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 427 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 54 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 125 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 427 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 42422 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 38032 |
| IRS990/PYInvestmentIncomeAmt | 0 | 12802 |
| IRS990/PYOtherExpensesAmt | 0 | 1925 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 15267 |
| IRS990/PYTotalExpensesAmt | 0 | 39957 |
| IRS990/PYTotalRevenueAmt | 0 | 55224 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -13222 |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | true |
| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 17600 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 42422 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 267304 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 327326 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearAmt | 0 | 9968 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 12802 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 417 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt | 0 | 23187 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt | 0 | 9968 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt | 0 | 12802 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt | 0 | 417 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt | 0 | 23187 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.07000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.04000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.93380 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.95910 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 327326 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus1YearAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus2YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/TotalAmt | 0 | 0 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 17600 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 42422 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 267304 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 327326 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 27568 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 55224 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 267721 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 0 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 0 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 350513 |
| 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 | true |
| IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt | 0 | 249877 |
| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 0 | TREASURY BILLSNOTES |
| IRS990ScheduleD/OtherSecuritiesGrp/MethodValuationCd | 0 | C |
| IRS990ScheduleD/TotalBookValueSecuritiesAmt | 0 | 249877 |
| IRS990ScheduleI/GrantRecordsMaintainedInd | 0 | true |
| IRS990ScheduleI/RecipientTable/CashGrantAmt | 0 | 38384 |
| IRS990ScheduleI/RecipientTable/PurposeOfGrantTxt | 0 | TO HELP WITH PROGRAMS RUN BY THE LIBRARY |
| IRS990ScheduleI/RecipientTable/RecipientBusinessName/BusinessNameLine1Txt | 0 | OSSINING PUBLIC LIBRARY |
| IRS990ScheduleI/RecipientTable/USAddress/AddressLine1Txt | 0 | 53 CROTON AVE |
| IRS990ScheduleI/RecipientTable/USAddress/CityNm | 0 | OSSINING |
| IRS990ScheduleI/RecipientTable/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990ScheduleI/RecipientTable/USAddress/ZIPCd | 0 | 10562 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | TREASURER REVIEWS 990 COMPARING IT TO THE ORGANIZATIONS FINANCIALS, IF ALL IS IN ORDER THE RETURN IS THEN AUTHORIZED TO BE E-FILED. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | FINANCIAL STATEMENTS AND GOVERNING DOCUMENTS ARE PROVIDED UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Form 990 governing body review Part VI line 11 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Governing documents etc available to public Part VI line 19 |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | NY |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxableDistributionsInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 299547 |
| IRS990/TotalAssetsEOYAmt | 0 | 286325 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 299547 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 286325 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 17600 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 1800 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 38990 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 40790 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 299547 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 286325 |
| IRS990/TotalOtherCompensationAmt | 0 | 0 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 38990 |
| IRS990/TotalReportableCompFromOrgAmt | 0 | 0 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 9968 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 0 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 27568 |
| IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 299547 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 286325 |
| IRS990/TotReportableCompRltdOrgAmt | 0 | 0 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UponRequestInd | 0 | X |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 4 |
| IRS990/VotingMembersIndependentCnt | 0 | 0 |
| IRS990/WhistleblowerPolicyInd | 0 | false |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | STEVE ALPERT |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | TREASURER |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 9149412416 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2025-12-30 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | THE OSSINING LIBRARY FOUNDATION |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | OSSI |
| ReturnHeader/Filer/EIN | 0 | 204860569 |
| ReturnHeader/Filer/InCareOfNm | 0 | % STEVE ALPERT |
| ReturnHeader/Filer/PhoneNum | 0 | 9149412416 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 53 CROTON AVENUE |
| ReturnHeader/Filer/USAddress/CityNm | 0 | OSSINING |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | NY |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 10562 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | true |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 133566215 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | Peter J Zambelletti & Co |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 55 Main Street |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | Tarrytown |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | NY |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 10591 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 9146311359 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2026-01-14 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | PETER J ZAMBELLETTI CPA |
| ReturnHeader/PreparerPersonGrp/SelfEmployedInd | 0 | X |
| ReturnHeader/ReturnTs | 0 | 2026-01-14T16:24:53-05:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2024-05-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2025-04-30 |
| ReturnHeader/TaxYr | 0 | 2024 |
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