﻿<?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>2024-09-16T07:41:07-05:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>030327374</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>MCSOLEY MCCOY &amp; CO</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>118 TILLEY DRIVE STE 202</AddressLine1Txt>
        <CityNm>SOUTH BURLINGTON</CityNm>
        <StateAbbreviationCd>VT</StateAbbreviationCd>
        <ZIPCd>05403</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>475543981</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>HERITAGE WINOOSKI MILL MUSEUM INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>HERI</BusinessNameControlTxt>
      <PhoneNum>8023559937</PhoneNum>
      <USAddress>
        <AddressLine1Txt>20 WINOOSKI FALLS WAY</AddressLine1Txt>
        <CityNm>WINOOSKI</CityNm>
        <StateAbbreviationCd>VT</StateAbbreviationCd>
        <ZIPCd>05404</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>MIRIAM BLOCK</PersonNm>
      <PersonTitleTxt>EXEC DIRECTOR &amp; TAX OFFICER</PersonTitleTxt>
      <PhoneNum>8023559937</PhoneNum>
      <SignatureDt>2024-09-13</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>0</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>CONNIE FELLION</PreparerPersonNm>
      <PTIN>P01875413</PTIN>
      <PhoneNum>8026581808</PhoneNum>
      <PreparationDt>2024-09-13</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-08-08 14:25:15Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="5">
    <IRS990EZ documentId="RetDoc1234200001" referenceDocumentId="RetDoc1051800001 RetDoc2278000001">
      <MethodOfAccountingOtherDesc>MODFIED CASH</MethodOfAccountingOtherDesc>
      <WebsiteAddressTxt>WWW.THEMILLMUSEUM.ORG</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc1039100001">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>119509</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>117452</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>1630</ProgramServiceRevenueAmt>
      <GrossSalesOfInventoryAmt>427</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>257</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>170</GrossProfitLossSlsOfInvntryAmt>
      <TotalRevenueAmt>119252</TotalRevenueAmt>
      <SalariesOtherCompEmplBnftAmt>57062</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>15829</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>3191</OccupancyRentUtltsAndMaintAmt>
      <OtherExpensesTotalAmt>32869</OtherExpensesTotalAmt>
      <TotalExpensesAmt>108951</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>10301</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>45599</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>55900</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>11151</BOYAmt>
        <EOYAmt>32528</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>34448</BOYAmt>
        <EOYAmt>23786</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>45599</BOYAmt>
        <EOYAmt>56314</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>414</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>45599</BOYAmt>
        <EOYAmt>55900</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>TO WEAVE OUR INDUSTRIAL AND CULTURAL PAST WITH WHAT MATTERS TO OUR COMMUNITY TODAY.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>WELCOME BLANKET EXHIBITION AND DONATION OF 80 BLANKETS TO REFUGEES. ONGONG STITCH TOGETHER KNITTING PROGRAM WITH REFUGEES. FRENCH HERITAGE DAY EXHIBITION ON SPOOL KNITTING WITH ART ACTIVITY. 25TH ANNIVERSARY CELEBRATION. 1,516 VISITORS AND OUTREACH PARTICIPANTS.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>89038</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>89038</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DONNA BROWN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.10</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ELISE AMEIGH</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.10</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MIRIAM BLOCK</PersonNm>
        <TitleTxt>EXEC DIR &amp; TAX OFFICER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>31.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>55400</CompensationAmt>
        <EmployeeBenefitProgramAmt>1662</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>PRUDENCE DOHERTY</PersonNm>
        <TitleTxt>CHAIR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARGARET TAMULONIS</PersonNm>
        <TitleTxt>VICE CHAIR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.30</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOHN CANNING</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.30</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ELIZA WEST</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.30</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <InfoInScheduleOPartVInd>X</InfoInScheduleOPartVInd>
      <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>0</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>0</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
      <DirectIndirectPltclExpendAmt>0</DirectIndirectPltclExpendAmt>
      <MadeLoansToFromOfficersInd>0</MadeLoansToFromOfficersInd>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <TaxImposedOnOrganizationMgrAmt>0</TaxImposedOnOrganizationMgrAmt>
      <TaxReimbursedByOrganizationAmt>0</TaxReimbursedByOrganizationAmt>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>MIRIAM BLOCK</PersonNm>
        <USAddress>
          <AddressLine1Txt>20 WINOOSKI FALLS WAY STE 301</AddressLine1Txt>
          <CityNm>WINOOSKI</CityNm>
          <StateAbbreviationCd>VT</StateAbbreviationCd>
          <ZIPCd>05404</ZIPCd>
        </USAddress>
        <PhoneNum>8023559937</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <DonorAdvisedFndsInd>0</DonorAdvisedFndsInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <TanningServicesProvidedInd>0</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>1</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>28550</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>37047</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>50903</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>114514</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>117452</CurrentTaxYearAmt>
        <TotalAmt>348466</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>28550</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>37047</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>50903</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>114514</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>117452</CurrentTaxYearAmt>
        <TotalAmt>348466</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>232161</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>116305</PublicSupportTotal170Amt>
      <TotalSupportAmt>348466</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>4390</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.33380</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.31370</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <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>
    <IRS990ScheduleO documentId="RetDoc1051800001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 7 - SALES OF INVENTORY</FormAndLineReferenceDesc>
        <ExplanationTxt>INCOME: GROSS RECEIPTS: 427. RETURNS AND ALLOWANCES: 0. LESS COST OF GOODS SOLD: 257. GROSS PROFIT: 170. COST OF GOODS SOLD: INVENTORY AT BEGINNING OF YEAR: 730. MERCHANDISE PURCHASED: 1,169. COST OF LABOR: 0. MATERIALS AND SUPPLIES: 0. OTHER COSTS: 0. INVENTORY AT END OF YEAR: 1,642. COST OF GOODS SOLD: 257.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16 - OTHER EXPENSES</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: DEPRECIATION. AMOUNT: 3,074. DESCRIPTION: ADVERTISING AND PROMOTION. AMOUNT: 1,560. DESCRIPTION: DONATION OF HANDMADE BLANKETS. AMOUNT: 13,600. DESCRIPTION: CHARITABLE CONTRIBUTIONS. AMOUNT: 1,000. DESCRIPTION: CONFERENCES AND MEETINGS. AMOUNT: 958. DESCRIPTION: EXHIBIT EXPENSES. AMOUNT: 341. DESCRIPTION: INFORMATION TECHNOLOGY. AMOUNT: 876. DESCRIPTION: INSURANCE. AMOUNT: 969. DESCRIPTION: MATERIALS AND SUPPLIES. AMOUNT: 1,939. DESCRIPTION: MEMBERSHIPS. AMOUNT: 145. DESCRIPTION: MERCHANT FEES. AMOUNT: 106. DESCRIPTION: OFFICE EXPENSES. AMOUNT: 1,425. DESCRIPTION: PRESENTATION AND EVENTS. AMOUNT: 1,032. DESCRIPTION: TRAVEL. AMOUNT: 1,510. DESCRIPTION: PAYROLL TAXES. AMOUNT: 4,334. TOTAL TO FORM 990-EZ, LINE 16: 32,869.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24 - OTHER ASSETS</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: INVENTORY. BEG. OF YEAR AMOUNT: 730. END OF YEAR AMOUNT: 1,642. DESCRIPTION: HANDMADE BLANKETS. BEG. OF YEAR AMOUNT: 8,500. END OF YEAR AMOUNT: 0. DESCRIPTION: OTHER DEPRECIABLE ASSETS. BEG. OF YEAR AMOUNT: 25,218. END OF YEAR AMOUNT: 22,144.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 26 - OTHER LIABILITIES</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: CREDIT CARD PAYABLE. BEG. OF YEAR AMOUNT: 0. END OF YEAR AMOUNT: 154. DESCRIPTION: PAYROLL LIABILITIES. BEG. OF YEAR AMOUNT: 0. END OF YEAR AMOUNT: 260.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <TransferPrsnlBnftContractsDecl documentId="RetDoc2278000001">
      <DeclarationDesc>THE ORGANIZATION DID NOT, DURING THE YEAR, RECEIVE ANY FUNDS, DIRECTLY,OR INDIRECTLY, TO PAY PREMIUMS ON A PERSONAL BENEFIT CONTRACT.THE ORGANIZATION, DID NOT, DURING THE YEAR, PAY ANY PREMIUMS, DIRECTLY,OR INDIRECTLY, ON A PERSONAL BENEFIT CONTRACT.</DeclarationDesc>
    </TransferPrsnlBnftContractsDecl>
  </ReturnData>
</Return>