﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2024v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2026-01-14T09:05:25-05:00</ReturnTs>
    <TaxPeriodEndDt>2024-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>364538379</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>DUMAIS FERLAND &amp; FULLER CPAS LLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>472 HIGH ST</AddressLine1Txt>
        <CityNm>SOMERSWORTH</CityNm>
        <StateAbbreviationCd>NH</StateAbbreviationCd>
        <ZIPCd>038781012</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2024-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>020362570</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>WENTWORTH-COOLIDGE MANSION</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>ASSOCIATION INC</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>WENT</BusinessNameControlTxt>
      <PhoneNum>6034332238</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO BOX 700</AddressLine1Txt>
        <CityNm>PORTSMOUTH</CityNm>
        <StateAbbreviationCd>NH</StateAbbreviationCd>
        <ZIPCd>03801</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>DONALD BLISS</PersonNm>
      <PersonTitleTxt>TREASURER</PersonTitleTxt>
      <PhoneNum>6039578347</PhoneNum>
      <SignatureDt>2025-12-11</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>false</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>ROBERT S FULLER CPA</PreparerPersonNm>
      <PTIN>P01473257</PTIN>
      <PhoneNum>6036925358</PhoneNum>
      <PreparationDt>2025-12-11</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="3">
    <IRS990EZ documentId="RetDoc1" referenceDocumentId="RetDoc2">
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>WENTWORTHCOOLIDGE.ORG</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc3">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>17744</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>14885</ContributionsGiftsGrantsEtcAmt>
      <InvestmentIncomeAmt>2859</InvestmentIncomeAmt>
      <TotalRevenueAmt>17744</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>300</FeesAndOtherPymtToIndCntrctAmt>
      <OtherExpensesTotalAmt>15707</OtherExpensesTotalAmt>
      <TotalExpensesAmt>16007</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>1737</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>89674</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>203583</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>294994</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>89674</BOYAmt>
        <EOYAmt>91334</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <OtherAssetsTotalDetail>
        <EOYAmt>203660</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>89674</BOYAmt>
        <EOYAmt>294994</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>89674</BOYAmt>
        <EOYAmt>294994</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>PRESERVATION AND INTERPRETATION OF NATIONAL HISTORIC LANDMARK.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>EDUCATIONAL PROGRAMS INCLUDING ART CLASSES, HISTORY LECTURES AND SIMULAR EVENTS AND SERVICES TO PRESENT THE STORY OF THE WENTWORTH AND COOLIDGE FAMILIES AND THE HISTORICAL LEGACY OF THE MANSION AND ITS GROUNDS.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>15707</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>EDUCATIONAL PROGRAMS INCLUDING ART CLASSES, HISTORY LECTURES AND SIMULAR EVENTS AND SERVICES TO PRESENT THE STORY OF THE WENTWORTH AND COOLIDGE FAMILES AND THE HISTORICAL LEGACY OF THE MANSION AND ITS GROUNDS.</DescriptionProgramSrvcAccomTxt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>15707</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>TAMA ANDREWS</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DAVID TAYLOR</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DAPHNE MCDONALD</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ELIZABETH AKROYD</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DONALD BLISS</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>GEORGE DANA BISBEE</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JUDY GROPPA</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>NH</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>DONALD BLISS</PersonNm>
        <USAddress>
          <AddressLine1Txt>48 MILBERN AVENUE</AddressLine1Txt>
          <CityNm>HAMPTON</CityNm>
          <StateAbbreviationCd>NH</StateAbbreviationCd>
          <ZIPCd>03842</ZIPCd>
        </USAddress>
        <PhoneNum>6034332238</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="RetDoc3">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>500</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>625</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3500</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>10498</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>14885</CurrentTaxYearAmt>
        <TotalAmt>30008</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>500</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>625</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3500</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>10498</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>14885</CurrentTaxYearAmt>
        <TotalAmt>30008</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>30008</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>334</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>148</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>144</CurrentTaxYearMinus2YearsAmt>
        <TotalAmt>626</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>30634</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>5280</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.97960</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.94670</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="RetDoc2">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES WEBSITE 338 1,198 HISTORIC SITE EXPENSES 6,610 FILING/DUES 75 SUPPLIES 77 STORAGE FACILITY 1,949 PO BOX RENTAL 282 CONSULTING 2,020 MEMBERSHIPS 92 SOFTWARE SUBSCRIPTION 347 EQUIPMENT 2,719 TOTAL 15,707</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 20</FormAndLineReferenceDesc>
        <ExplanationTxt>PRIOR PERIOD ADJUSTMENT -UNRECORDED RESTRICTED FDS 203,660 TIMING DIFFERENCE -77</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24</FormAndLineReferenceDesc>
        <ExplanationTxt>RESTRICTED FUNDS 0 203,660 TOTAL 0 203,660</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART III, LINE 31</FormAndLineReferenceDesc>
        <ExplanationTxt>EDUCATIONAL PROGRAMS INCLUDING ART CLASSES, HISTORY LECTURES AND SIMULAR EVENTS AND SERVICES TO PRESENT THE STORY OF THE WENTWORTH AND COOLIDGE FAMILES AND THE HISTORICAL LEGACY OF THE MANSION AND ITS GROUNDS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>