Liabilities / Assets
33rd percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 06-0834599 • 501(c)3 • Watertown, CT
Profile
The primay goal of the society is to preserve Watertown history and to strenthen the community's connection to the past,to each other and to the future.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
33rd percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
35th percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
88th percentile
Higher net margin than 88% of similar nonprofits.
Top Officer Pay
55th percentile
Higher top officer pay than 55% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
55th percentile
Faster asset growth than 55% of similar nonprofits.
Revenue Growth
16th percentile
Faster revenue growth than 16% of similar nonprofits.
Assets
Up$797,233
Up $40,254 (+5.3%) from 2024
Liabilities
Flat$0
Flat from 2024
Net Assets
Up$797,233
Up $40,254 (+5.3%) from 2024
Revenue
Down$89,617
Down $26,160 (-23%) from 2024
Expenses
Down$49,363
Down $1,166 (-2.3%) from 2024
Net Income
Down$40,254
Down $24,994 (-38%) from 2024
Most recent year
2025 • Form 990XML pending. An XML filing is linked for this year, but detailed extraction is still pending.
The latest 2025 filing currently has linked XML that has not been fully parsed yet. Showing the latest detailed filing from 2024 below.
The primay goal of the society is to preserve Watertown history and to strenthen the community's connection to the past,to each other and to the future.
The primary goal of the society is to preserve watertown history and to strengthen the community's connection to the pas, to each other, and the future.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Rtn Earn Endowment Incm Other Fnds | $691,731 | $756,979 | ▲ $65,248 |
| Land, Buildings, and Equipment, Net | $601,711 | $636,367 | ▲ $34,656 |
| Savings and Temporary Cash Investments | $69,494 | $65,533 | ▼ $3,961 |
| Cash and Non-Interest-Bearing Accounts | $7,944 | $55,079 | ▲ $47,135 |
| Total Assets | $691,731 | $756,979 | ▲ $65,248 |
| Other Assets Total | $12,582 | - | - |
| Liabilities | |||
| Total Liabilities | $0 | $0 | → $0 |
| Net Assets / Fund Balance | |||
| Total Net Assets Fund Balance | $691,731 | $756,979 | ▲ $65,248 |
| Total Liabilities and Net Assets / Fund Balance | $691,731 | $756,979 | ▲ $65,248 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $282,612 | $48,296 | $330,908 |
| Other Land Buildings | $303,755 | $21,395 | $325,150 |
| Land | $50,000 | - | $50,000 |
| Name | Title |
|---|---|
| Ivan Cyr | President |
| Joann Barthelmess | Curator |
| Christine Sheilds | Secretary |
| Margeret Divito | Treasurer |
| Chelsea Marti | Vice-preside |
| Line Item | Amount |
|---|---|
| Other Expenses | $50,529 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Depreciation Depletion | $21,395 | - | - | $21,395 |
| Occupancy | $13,880 | - | - | $13,880 |
| Office Expenses | $8,920 | - | - | $8,920 |
| Insurance | $4,089 | - | - | $4,089 |
| Advertising | $1,055 | - | - | $1,055 |
| Fees for Services Accounting | $895 | - | - | $895 |
| Interest | $295 | - | - | $295 |
| Total Functional Expenses | $50,529 | $0 | $0 | $50,529 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“The board of directors is provided with a copy of form 990 before it is filed”
“Form 990 is available to the public upon request”
“The watertown historical society inc., along with the watertown history museum was orginized in 1945 with the objective of collecting local history.”
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 | false |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | THE PRIMARY GOAL OF THE SOCIETY IS TO PRESERVE WATERTOWN HISTORY AND TO STRENGTHEN THE COMMUNITY'S CONNECTION TO THE PAS, TO EACH OTHER, AND THE FUTURE. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 1055 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 1055 |
| IRS990/AllOtherContributionsAmt | 0 | 86325 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | WATERTOWN HISTORICAL SOCIETY |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 8602741050 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 401 MAIN STREET |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | WATERTOWN |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CT |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 06795 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 7944 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 55079 |
| 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 | 101226 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 3333 |
| IRS990/CYOtherExpensesAmt | 0 | 50529 |
| IRS990/CYOtherRevenueAmt | 0 | 1734 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 9484 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 65248 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 50529 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 115777 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 21395 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 21395 |
| IRS990/Desc | 0 | THE WATERTOWN HISTORICAL SOCIETY INC., ALONG WITH THE WATERTOWN HISTORY MUSEUM WAS ORGINIZED IN 1945 WITH THE OBJECTIVE OF COLLECTING LOCAL HISTORY. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 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/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 895 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 895 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| 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/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/PersonNm | 0 | JOANN BARTHELMESS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | IVAN CYR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | MARGERET DIVITO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | CHELSEA MARTI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | CHRISTINE SHEILDS |
| 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/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/TitleTxt | 0 | CURATOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VICE-PRESIDE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | SECRETARY |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1945 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 10 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 115777 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 10 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 4089 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 4089 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 295 |
| IRS990/InterestGrp/TotalAmt | 0 | 295 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 3333 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 3333 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 69691 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 601711 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 636367 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 706058 |
| IRS990/LegalDomicileStateCd | 0 | CT |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembershipDuesAmt | 0 | 14901 |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingCashInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | THE PRIMARY GOAL OF THE SOCIETY IS TO PRESERVE WATERTOWN HISTORY AND TO STRENGTHEN THE COMMUNITY'S CONNECTION TO THE PAS, TO EACH OTHER, AND THE FUTURE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 691731 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 756979 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 13880 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 13880 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 8920 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 8920 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrgDoesNotFollowFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 12582 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | EVENTS |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | MERCHANDISE SALES |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 1369 |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 1 | 365 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 1369 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 365 |
| IRS990/OtherRevenueTotalAmt | 0 | 1734 |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | IVAN CYR |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | PROGRAM INCOME |
| IRS990/ProgramServiceRevenueGrp/ExclusionAmt | 0 | 9484 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 9484 |
| IRS990/ProgSrvcAccomActyOtherGrp/Desc | 0 | THE WATERTOWN HISTORICAL SOCIETY INC., ALONG WITH THE WATERTOWN HISTORY MUSEUM WAS ORGINIZED IN 1945 WITH THE OBJECTIVE OF COLLECTING LOCAL HISTORY. |
| IRS990/ProgSrvcAccomActyOtherGrp/ExpenseAmt | 0 | 50529 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 62820 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 1230 |
| IRS990/PYOtherExpensesAmt | 0 | 53622 |
| IRS990/PYOtherRevenueAmt | 0 | 553 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 3550 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 14531 |
| IRS990/PYTotalExpensesAmt | 0 | 53622 |
| IRS990/PYTotalRevenueAmt | 0 | 68153 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 65248 |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 9484 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/BOYAmt | 0 | 691731 |
| IRS990/RtnEarnEndowmentIncmOthFndsGrp/EOYAmt | 0 | 756979 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 69494 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 65533 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 101226 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 62820 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 128937 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 104104 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 124674 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 521761 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearAmt | 0 | 3333 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt | 0 | 1230 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt | 0 | -12563 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 12861 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 7015 |
| IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt | 0 | 11876 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearAmt | 0 | 11218 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearMinus1YearAmt | 0 | 4103 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/CurrentTaxYearMinus2YearsAmt | 0 | 883 |
| IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/TotalAmt | 0 | 16204 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt | 0 | 3333 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt | 0 | 1230 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt | 0 | -12563 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt | 0 | 12861 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus4YearsAmt | 0 | 7015 |
| IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt | 0 | 11876 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.02000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.04000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0.97840 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 0.98010 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 537965 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 112444 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 66923 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 129820 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 104104 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 124674 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 537965 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 115777 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 68153 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 117257 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 116965 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 131689 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 549841 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 282612 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 48296 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 330908 |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 50000 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 50000 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 303755 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 21395 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 325150 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 636367 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | THE WATERTOWN HISTORICAL SOCIETY INC., ALONG WITH THE WATERTOWN HISTORY MUSEUM WAS ORGINIZED IN 1945 WITH THE OBJECTIVE OF COLLECTING LOCAL HISTORY. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE BOARD OF DIRECTORS IS PROVIDED WITH A COPY OF FORM 990 BEFORE IT IS FILED |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | FORM 990 IS AVAILABLE TO THE PUBLIC UPON REQUEST |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PAGE 2, PART III, LINE 4D |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 19 |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 691731 |
| IRS990/TotalAssetsEOYAmt | 0 | 756979 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 691731 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 756979 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 101226 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 50529 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 50529 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 0 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 691731 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 756979 |
| IRS990/TotalOtherProgSrvcExpenseAmt | 0 | 50529 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 50529 |
| IRS990/TotalProgramServiceRevenueAmt | 0 | 9484 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 14551 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 115777 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 691731 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 756979 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | 43 BEACH AVENUE |
| IRS990/USAddress/CityNm | 0 | WATERTOWN |
| IRS990/USAddress/StateAbbreviationCd | 0 | CT |
| IRS990/USAddress/ZIPCd | 0 | 06795 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 10 |
| IRS990/VotingMembersIndependentCnt | 0 | 10 |
| IRS990/WebsiteAddressTxt | 0 | WATERTOWNHISTORYMUSEUM.ORG |
| IRS990/WhistleblowerPolicyInd | 0 | false |
| ReturnHeader/BuildTS | 0 | 2024-08-08 14:25:15Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | IVAN CYR |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | PRESIDENT |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 8602741050 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2024-09-25 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | WATERTOWN HISTORICAL SOCIETY INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | WATE |
| ReturnHeader/Filer/EIN | 0 | 060834599 |
| ReturnHeader/Filer/PhoneNum | 0 | 8602741050 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 401 MAIN STREET |
| ReturnHeader/Filer/USAddress/CityNm | 0 | WATERTOWN |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | CT |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 06795 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | false |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 823414917 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | MUGFORD & DIBELLA LLC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 205 W MAIN ST |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | NEW BRITAIN |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | CT |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 06052 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 8602232701 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2024-09-25 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | CHRISTOPHER M CALABRESE |
| ReturnHeader/ReturnTs | 0 | 2024-09-25T10:28:11-04:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2023-09-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2024-08-31 |
| ReturnHeader/TaxYr | 0 | 2023 |
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