<?xml version="1.0" encoding="utf-8"?>
<Return returnVersion="2023v5.0" xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-06-04T09:36:14-07:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>231522651</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>Evangelical &amp; Reformed Historical Society</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>EVAN</BusinessNameControlTxt>
      <PhoneNum>7172908734</PhoneNum>
      <USAddress>
        <AddressLine1Txt>555 W James Street</AddressLine1Txt>
        <CityNm>Lancaster</CityNm>
        <StateAbbreviationCd>PA</StateAbbreviationCd>
        <ZIPCd>176032830</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Scott Meyer-Kukan</PersonNm>
      <PersonTitleTxt>President &amp; CEO</PersonTitleTxt>
      <PhoneNum>7325191533</PhoneNum>
      <SignatureDt>2024-06-03</SignatureDt>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>Scott</PersonFirstNm>
        <PersonLastNm>Meyer-Kukan</PersonLastNm>
      </PersonFullName>
      <SSN>999009999</SSN>
    </SigningOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>1</IRSResponsiblePrtyInfoCurrInd>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>1</TrustedCustomerCd>
        <OOBSecurityVerificationCd>11</OOBSecurityVerificationCd>
        <LastSubmissionRqrOOBCd>0</LastSubmissionRqrOOBCd>
        <AuthenticationAssuranceLevelCd>AAL2</AuthenticationAssuranceLevelCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2023</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="R000001" referenceDocumentId="R000003 R000004" softwareId="23018249" softwareVersionNum="v1.00">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>https://erhistoricalsociety.org</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="R000002">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>86294</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>84427</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>1867</ProgramServiceRevenueAmt>
      <MembershipDuesAmt>0</MembershipDuesAmt>
      <InvestmentIncomeAmt>0</InvestmentIncomeAmt>
      <SaleOfAssetsGrossAmt>0</SaleOfAssetsGrossAmt>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <GainOrLossFromSaleOfAssetsAmt>0</GainOrLossFromSaleOfAssetsAmt>
      <GamingGrossIncomeAmt>0</GamingGrossIncomeAmt>
      <FundraisingGrossIncomeAmt fndrsngEventContriPrevRptAmt="0">0</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>0</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>0</SpecialEventsNetIncomeLossAmt>
      <GrossSalesOfInventoryAmt>0</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>0</GrossProfitLossSlsOfInvntryAmt>
      <OtherRevenueTotalAmt>0</OtherRevenueTotalAmt>
      <TotalRevenueAmt>86294</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>0</GrantsAndSimilarAmountsPaidAmt>
      <BenefitsPaidToOrForMembersAmt>0</BenefitsPaidToOrForMembersAmt>
      <SalariesOtherCompEmplBnftAmt>124111</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>8400</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>2578</OccupancyRentUtltsAndMaintAmt>
      <PrintingPublicationsPostageAmt>2812</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>26940</OtherExpensesTotalAmt>
      <TotalExpensesAmt>164841</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-78547</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>344224</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>29193</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>294870</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>346023</BOYAmt>
        <EOYAmt>303302</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <LandAndBuildingsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LandAndBuildingsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>346023</BOYAmt>
        <EOYAmt>303302</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>1799</BOYAmt>
        <EOYAmt>8432</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>344224</BOYAmt>
        <EOYAmt>294870</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>The mission of the Evangelical and Reformed Historical Society is to stimulate and cultivate interest in the continuing legacy of the Evangelical and Reformed Church. To accomplish this, we will: (1) collect and preserve historical material, (2) make information and resources accessible to all, (3) provide engaging educational opportunities, (4) foster cooperation with other interested organizations, and (5) ensure the Society has the optimal infrastructure and funding to support its ongoing mission.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Collecting and preserving historical material related to the former Evangelical and Reformed Church and its predecessor denominations. Making information and resources accessible to all.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>500</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>129501</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Providing engaging educational opportunities through newsletters, annual and regional meetings, workshops, and individual consultations.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>1591</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>131092</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Scott Meyer-Kukan</PersonNm>
        <TitleTxt>President &amp; CEO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>40.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>57687</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Lorin Cope</PersonNm>
        <TitleTxt>Vice-President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>3</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Garland Gates</PersonNm>
        <TitleTxt>Secretary</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>3</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Lucas Cauley</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>3</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Kenneth Clapp</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>James Semmelroth Darnell</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Timothy Perkins</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Matthew Wagner</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Victoria Ubben</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>John Richter</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Elizabeth Gedert</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Karen Jania</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Ann Ringia</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Alison Mallin</PersonNm>
        <TitleTxt>Office Administrator</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>32.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>33525</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Charles Torchio</PersonNm>
        <TitleTxt>Archivist</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>24.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>4783</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>0</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>0</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
      <DirectIndirectPltclExpendAmt>0</DirectIndirectPltclExpendAmt>
      <Form1120PolFiledInd>0</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>0</MadeLoansToFromOfficersInd>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <TaxImposedOnOrganizationMgrAmt>0</TaxImposedOnOrganizationMgrAmt>
      <TaxReimbursedByOrganizationAmt>0</TaxReimbursedByOrganizationAmt>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>PA</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>Scott Meyer-Kukan</PersonNm>
        <USAddress>
          <AddressLine1Txt>555 W James Street</AddressLine1Txt>
          <CityNm>Lancaster</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>176032830</ZIPCd>
        </USAddress>
        <PhoneNum>7172908734</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <DonorAdvisedFndsInd>0</DonorAdvisedFndsInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <TanningServicesProvidedInd>0</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>0</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>1</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="R000002" softwareId="23018249" softwareVersionNum="v1.00">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>39454</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>198046</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>39802</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>32185</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>84427</CurrentTaxYearAmt>
        <TotalAmt>393914</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>2557</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>3124</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3124</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1594</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1867</CurrentTaxYearAmt>
        <TotalAmt>12266</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>42011</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>201170</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>42926</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>33779</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>86294</CurrentTaxYearAmt>
        <TotalAmt>406180</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>406180</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>7263</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>8015</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>14233</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>3257</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>8176</CurrentTaxYearAmt>
        <TotalAmt>40944</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>7263</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>8015</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>14233</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>3257</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>8176</CurrentTaxYearAmt>
        <TotalAmt>40944</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>49274</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>209185</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>57159</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>37036</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>94470</CurrentTaxYearAmt>
        <TotalAmt>447124</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.90843</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.90107</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.09157</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.09893</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsPY509Ind>X</ThirtyThrPctSuprtTestsPY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="R000003" softwareId="23018249" softwareVersionNum="v1.00">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Description;Amount^bank fees;93|office supplies;504|archival supplies;1547|conferences and meetings;1591|state and federal licenses;100|room rentals and gas;3027|relocation expenses;6020|committee expenses;113|payroll taxes;8291|legal and professional;5537|miscellaneous;117^Total;26940^</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part I, Line 20</FormAndLineReferenceDesc>
        <ExplanationTxt>Description;Amount^gain or loss on investments and prior period balance;29193^Total;29193^</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part II, Line 26</FormAndLineReferenceDesc>
        <ExplanationTxt>Description;EOY Amount^payroll tax liabilities;8432^Total;8432^</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <ReasonableCauseExplanation documentId="R000004" softwareId="23018249" softwareVersionNum="v1.00">
      <ExplanationTxt>As a nonprofit organization we are always looking to cut costs and increase donations. We have implemented QuickBooks Online to assist our President &amp; CEO who was hired January 1, 2023. With any change there is time needed for learning and excess time was needed to ensure that reporting for 2023 was accurate. I apologize that an extension was not filed and moving forward we now understand that this is a possibility. We have been diligent in the past to file early and/or on time and regret that this was not the case for 2023. We will ensure that this does not happen in the coming years and appreciate any exception that might be able to be made in this case.</ExplanationTxt>
    </ReasonableCauseExplanation>
  </ReturnData>
</Return>
