<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2023v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-04-29T17:11:29-04:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>371074029</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>MCK CPAS &amp; ADVISORS</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>202 N PROSPECT ROAD SUITE 206</AddressLine1Txt>
        <CityNm>BLOOMINGTON</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>61704</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>371207344</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>DAVID DAVIS MANSION FOUNDATION</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>DAVI</BusinessNameControlTxt>
      <PhoneNum>3098281084</PhoneNum>
      <USAddress>
        <AddressLine1Txt>1000 MONROE DRIVE</AddressLine1Txt>
        <CityNm>BLOOMINGTON</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>61701</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>SHERI BROWNFIELD</PersonNm>
      <PersonTitleTxt>EXECUTIVE DIR.</PersonTitleTxt>
      <PhoneNum>3098281084</PhoneNum>
      <SignatureDt>2024-04-17</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>SHERI</PersonFirstNm>
        <PersonLastNm>BROWNFIELD</PersonLastNm>
      </PersonFullName>
      <SSN>XXX-XX-XXXX</SSN>
    </SigningOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>BREE A JACOBSEN</PreparerPersonNm>
      <PTIN>P01531350</PTIN>
      <PhoneNum>3098286071</PhoneNum>
      <PreparationDt>2024-04-17</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="RetDoc1" referenceDocumentId="RetDoc3">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>WWW.DAVIDDAVISMANSION.ORG</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc4">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>152678</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>25182</ContributionsGiftsGrantsEtcAmt>
      <MembershipDuesAmt>39552</MembershipDuesAmt>
      <InvestmentIncomeAmt>3636</InvestmentIncomeAmt>
      <FundraisingGrossIncomeAmt referenceDocumentId="RetDoc2">68901</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>25378</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>43523</SpecialEventsNetIncomeLossAmt>
      <GrossSalesOfInventoryAmt>15349</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>8687</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>6662</GrossProfitLossSlsOfInvntryAmt>
      <OtherRevenueTotalAmt>58</OtherRevenueTotalAmt>
      <TotalRevenueAmt>118613</TotalRevenueAmt>
      <SalariesOtherCompEmplBnftAmt>76341</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>1375</FeesAndOtherPymtToIndCntrctAmt>
      <PrintingPublicationsPostageAmt>361</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>27136</OtherExpensesTotalAmt>
      <TotalExpensesAmt>105213</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>13400</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>278755</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>292155</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>250779</BOYAmt>
        <EOYAmt>265650</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>27976</BOYAmt>
        <EOYAmt>26505</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>278755</BOYAmt>
        <EOYAmt>292155</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>278755</BOYAmt>
        <EOYAmt>292155</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>FACILITATE HISTORIC MANSION ACTIVITIES</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>HISTORIC MANSION DEPICTING TIME AND ERA PRESENTATIONS OF LIFE AND RELATIONSHIPS BETWEEN JUDGE DAVID DAVIS AND ABRAHAM LINCOLN.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>73508</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>73508</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SONDRA FINDLEY</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>RONALD FRAZIER</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MATT HANY</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SCOTT MYERS</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DAVE OLOFFSON</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CYNTHIA RUSTEMEYER</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ERIC CLEVENGER</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>KATHE CONLEY</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARK GEIER</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JEFF KOWALCZYK</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>LYNDA STRAW</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DAVID ZINK</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JENNA KEARNS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BARB ELY</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SHERI BROWNFIELD</PersonNm>
        <TitleTxt>EXECUTIVE DI</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>20.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>27355</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>IL</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>SHERI BROWNFIELD</PersonNm>
        <USAddress>
          <AddressLine1Txt>1000 MONROE DRIVE</AddressLine1Txt>
          <CityNm>BLOOMINGTON</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>61701</ZIPCd>
        </USAddress>
        <PhoneNum>3098281084</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="RetDoc4">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>10665</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>72837</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>76438</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>62845</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>64734</CurrentTaxYearAmt>
        <TotalAmt>287519</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>91595</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>58249</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>100378</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>96196</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>84308</CurrentTaxYearAmt>
        <TotalAmt>430726</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>102260</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>131086</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>176816</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>159041</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>149042</CurrentTaxYearAmt>
        <TotalAmt>718245</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>718245</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>1464</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>621</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>278</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>827</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>3636</CurrentTaxYearAmt>
        <TotalAmt>6826</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>1464</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>621</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>278</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>827</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>3636</CurrentTaxYearAmt>
        <TotalAmt>6826</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>103724</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>131707</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>177094</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>159868</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>152678</CurrentTaxYearAmt>
        <TotalAmt>725071</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.99060</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.99430</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.01000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.01000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleG documentId="RetDoc2">
      <FundraisingEventInformationGrp>
        <Event1Nm>GARDEN WALK</Event1Nm>
        <GrossReceiptsEvent1Amt>28577</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>28577</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>2909</OtherDirectExpensesEvent1Amt>
        <Event2Nm>CHRISTMAS</Event2Nm>
        <GrossReceiptsEvent2Amt>22400</GrossReceiptsEvent2Amt>
        <GrossRevenueEvent2Amt>22400</GrossRevenueEvent2Amt>
        <OtherDirectExpensesEvent2Amt>12607</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>1</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>17924</GrossReceiptsOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>17924</GrossRevenueOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>9862</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>68901</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>68901</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>25378</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>25378</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>43523</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 8</FormAndLineReferenceDesc>
        <ExplanationTxt>MISCELLANEOUS 58 TOTAL 58</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES ADVERTISING 1,625 OFFICE EXP. 951 INSURANCE 1,345 WEBSITE 3,006 REPAIRS AND MAINTENANCE 11,363 MEMBERSHIP DEVELOPMENT 515 CREDIT CARD FEES 1,399 MUSEUM SHOP 2,732 EQUIPMENT UPKEEP 2,367 MISCELLANEOUS 1,503 GEN. INSTIT. AWARENESS 330 TOTAL 27,136</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24</FormAndLineReferenceDesc>
        <ExplanationTxt>INVENTORIES FOR SALE OR USE 27,976 26,505 1,570 1,570 LESS ACCUMULATED DEPRECIATION 1,570 1,570 TOTAL 27,976 26,505</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
