﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2023v5.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-11-01T12:16:05-00:00</ReturnTs>
    <TaxPeriodEndDt>2024-06-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>465153928</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>MJ Murphy CPA</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>3891 Maple Street</AddressLine1Txt>
        <CityNm>Seaford</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>11783</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>237066685</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>Seaford Historical Society</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>SEAF</BusinessNameControlTxt>
      <PhoneNum>5166602275</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO Box 1254</AddressLine1Txt>
        <CityNm>Seaford</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>11783</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Judy Bongiovi</PersonNm>
      <PersonTitleTxt>President</PersonTitleTxt>
      <PhoneNum>5166602275</PhoneNum>
      <SignatureDt>2024-11-01</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Michael J Murphy</PreparerPersonNm>
      <PTIN>P01203707</PTIN>
      <PhoneNum>5162212047</PhoneNum>
      <PreparationDt>2024-11-01</PreparationDt>
      <SelfEmployedInd>X</SelfEmployedInd>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="5">
    <IRS990EZ documentId="990EZ" softwareId="23017659" softwareVersionNum="23.1.0.0">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <WebsiteAddressTxt>SeafordHistoricalSociety.org</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="990A">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>75369</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>52950</ContributionsGiftsGrantsEtcAmt>
      <MembershipDuesAmt>3645</MembershipDuesAmt>
      <InvestmentIncomeAmt>196</InvestmentIncomeAmt>
      <FundraisingGrossIncomeAmt referenceDocumentId="990G">18578</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>7788</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>10790</SpecialEventsNetIncomeLossAmt>
      <TotalRevenueAmt>67581</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>200</GrantsAndSimilarAmountsPaidAmt>
      <OccupancyRentUtltsAndMaintAmt>65489</OccupancyRentUtltsAndMaintAmt>
      <PrintingPublicationsPostageAmt>579</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>2102</OtherExpensesTotalAmt>
      <TotalExpensesAmt>68370</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-789</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>24414</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>23625</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>13225</BOYAmt>
        <EOYAmt>12436</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <LandAndBuildingsGrp>
        <BOYAmt>11189</BOYAmt>
        <EOYAmt>11189</EOYAmt>
      </LandAndBuildingsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>24414</BOYAmt>
        <EOYAmt>23625</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>24414</BOYAmt>
        <EOYAmt>23625</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>Promote local history education in Seaford, NY.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Had at least quarterly meeting, lectures with members to discuss local Seaford farming and maritime history. Published newsletter for members to disseminate information about local history and Societys meeting and activities.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>707</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Scheduled work to restore Societys historical landmark museum building both exterior and interior. Museum opened on scheduled days to exhibit farming and maritime artifacts to local community.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>50000</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>59962</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Conducted Harvest Fair fundraising event to promote and educate local community about local traditions and customs from Seafords farming and maritime past.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>3289</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>63958</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Judy Bongiovi</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>010.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Frank Allaire</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.75</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Phil Nicola</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Steve Bongiovi</PersonNm>
        <TitleTxt>Corresponding Sec</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>006.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Carol Keen</PersonNm>
        <TitleTxt>Recording Sec</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.50</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Ben Sohm</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Marilyn Fannon</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Kathy Weeks</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Charles Wroblewski</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Cyndi Schaaf</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Karen Comito</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Patrick Martz</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Sue Nicola</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Donna Jabelly</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.50</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Mark Simonson</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>001.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <BooksInCareOfDetail>
        <PersonNm>Judy Bongiovi</PersonNm>
        <USAddress>
          <AddressLine1Txt>PO Box 1254</AddressLine1Txt>
          <CityNm>Seaford</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>11783</ZIPCd>
        </USAddress>
        <PhoneNum>5166602275</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="990A" softwareId="23017659" softwareVersionNum="23.1.0.0">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>25999</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2868</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>54104</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>15303</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>56595</CurrentTaxYearAmt>
        <TotalAmt>154869</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>11907</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>7127</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>4500</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>27905</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>18578</CurrentTaxYearAmt>
        <TotalAmt>70017</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>37906</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>9995</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>58604</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>43208</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>75173</CurrentTaxYearAmt>
        <TotalAmt>224886</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>224886</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>310</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>156</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>63</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>73</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>196</CurrentTaxYearAmt>
        <TotalAmt>798</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <Post1975UBTIGrp>
        <TotalAmt>0</TotalAmt>
      </Post1975UBTIGrp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>310</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>156</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>63</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>73</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>196</CurrentTaxYearAmt>
        <TotalAmt>798</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <NetIncomeFromOtherUBIGrp>
        <TotalAmt>0</TotalAmt>
      </NetIncomeFromOtherUBIGrp>
      <OtherIncome509Grp>
        <TotalAmt>0</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>38216</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>10151</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>58667</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>43281</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>75369</CurrentTaxYearAmt>
        <TotalAmt>225684</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.99650</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.99460</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00350</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00540</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="990B" softwareId="23017659" softwareVersionNum="23.1.0.0">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleG documentId="990G" softwareId="23017659" softwareVersionNum="23.1.0.0">
      <MailSolicitationsInd>X</MailSolicitationsInd>
      <SolicitationOfGovtGrantsInd>X</SolicitationOfGovtGrantsInd>
      <AgrmtProfFundraisingActyInd>false</AgrmtProfFundraisingActyInd>
      <FundraisingEventInformationGrp>
        <Event1Nm>Harvest Fair</Event1Nm>
        <GrossReceiptsEvent1Amt>14040</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>14040</GrossRevenueEvent1Amt>
        <CashPrizesEvent1Amt>1720</CashPrizesEvent1Amt>
        <OtherDirectExpensesEvent1Amt>1569</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>14040</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>14040</GrossRevenueTotalEventsAmt>
        <CashPrizesTotalEventsAmt>1720</CashPrizesTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>1569</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>3289</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>10751</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="990O" softwareId="23017659" softwareVersionNum="23.1.0.0">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part I, Line 16, Other Expenses</FormAndLineReferenceDesc>
        <ExplanationTxt>All Other 2,102</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Seaford Schlorship Fund 200 Advertising 375, Donations 100 memorial donation Nassau County Firefighter Burn Unit for Kevin Weeks, deceased member Insurance 727 Meeting Expenses 293 Fees and charges 391, Other 165</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>