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      <Desc>EXHIBITIONS: MASKS OF BOSTON: VIRTUAL EXHIBIT O SUMMER 2020 O PHOTOGRAPHY EXHIBIT BY KATHERINE TAYLOR THE ART OF OBSERVATION: A RETROSPECTIVE OF THE WORK OF DAVID CAMPBELL O NOVEMBER 2020 MAY 22, 2021 (EXTENDED) O CURATED BY DEBRA OLIN EVENTS: CIVIL LIBERTIES AND PANDEMICS: THE CASE OF HENNING JACOBSON (VIRTUAL EVENT) O APRIL 30, 2020 O DAN BREEN BOSTON, SOMERVILLE AND THE 1918 INFLUENZA PANDEMIC (VIRTUAL EVENT) O MAY 13, 2020 O DAN BREEN SO THE 1918 FLU HIT YOUR FAMILY TOO? (VIRTUAL EVENT) O JUNE 24, 2020 O LORI LYN PRICE RACE, FRAGILITY, AND ANTI-RACISM: A SUMMER DISCUSSION SERIES O JULY 1 SEPTEMBER 23, 2020 O DEVELOPED BY KEIDRICK AND HOLLY ROY READING FREDERICK DOUGLASS TOGETHER (VIRTUAL EVENT) O JULY 2, 2020 O KEIDRICK ROY FAITH IN A CITY: EXPLORING LOCAL RELIGIOUS GROUPS IN MUSEUMS (VIRTUAL EVENT) O JULY 28, 2020 O NEMA + SOMERVILLE MUSEUM (ALIZA ARTZT, ANGAD SINGH, FATHER ADRIANO TEZONE, HAITI THOMAS, CELENE IBRAHIM, KEIDRICK ROY) THE BASEMENT PROJECT: STUDENT CURATOR PANEL (VIRTUAL EVENT) O AUGUST 27, 2020 O STUDENTS + ADDA SANTOS VOICES FROM SOMERVILLE: HAITIAN COMMUNITY O OCTOBER 14, 2020 O DEVELOPED BY CHARAN DEVEREAUX VOICES FROM SOMERVILLE: BRAZILIAN COMMUNITY O NOVEMBER 18, 2020 O DEVELOPED BY CHARAN DEVEREAUX THE ART OF OBSERVATION: CURATOR TALK + STUDIO TOUR: VIRTUAL VIDEO PRESENTATION O DECEMBER 2020 O DEBRA OLIN + DAVID CAMPBELL CALL FOR COMMUNITY CURATORS O DEADLINE OF DECEMBER 30, 2020 THE ART OF OBSERVATION: HOME IS WHERE THE ART IS O JANUARY 2021 VOICES FROM SOMERVILLE: GREEK COMMUNITY O JANUARY 27, 2021 O DEVELOPED BY CHARAN DEVEREAUX</Desc>
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        <EOYAmt>1982744</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>581745</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
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        <CurrentTaxYearMinus1YearAmt>147335</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>623156</CurrentTaxYearAmt>
        <TotalAmt>1030110</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>1030110</PublicSupportTotal170Amt>
      <TotalSupportAmt>1030110</TotalSupportAmt>
      <PublicSupportCY170Pct>1.00000</PublicSupportCY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CollectionUsedPubExhibitionInd>X</CollectionUsedPubExhibitionInd>
      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <SolicitedAssetsSaleInd>0</SolicitedAssetsSaleInd>
      <CYEndwmtFundGrp>
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        <ContributionsAmt>18806</ContributionsAmt>
        <EndYearBalanceAmt>54077</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
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      </CYMinus1YrEndwmtFundGrp>
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        <BookValueAmt>654900</BookValueAmt>
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        <BookValueAmt>813073</BookValueAmt>
      </BuildingsGrp>
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      <OtherAssetsOrgGrp>
        <Desc>HISTORICAL WORKS OF ART, ARTIFACTS, AND DOCUMENTS.</Desc>
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      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>100000</TotalBookValueOtherAssetsAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>EVELYN BATTINELLI, EXECUTIVE DIRECTOR, SECRETARY &amp; TRUSTEE IS TRUSTEE REGINA PISA'S AUNT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAD MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOMERVILLE HISTORICAL SOCIETY IS A MEMBERSHIP ORGANIZATION GOVERNED BY A BOARD OF TUSTEES. THE BOARD OF TRUSTEES IS ELECTED ANNUALLY BY A QUORUM OF THE MEMBERS AT THE ANNUAL MEETING. MEMBERS ARE THOSE INDIVIDUALS WHO PAY ANNUAL DUES</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 8B</FormAndLineReferenceDesc>
        <ExplanationTxt>MONTHLY BOARD MEETINGS MINUTES WERE WRITTEN UP TO DOCUMENT THE ACTIONS UNDERTAKEN DURING THE YEAR</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>YES THE GOVERNING BODY REVIEWED FORM 990 BEFORE BEING FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD MONITORED THE ORGANIZATIONS WRITTEN POLICIES AND MADE SURE THEY WERE FOLLOWED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCESS FOR DETERMINING COMPENSATION FOR ALISON DRASNER INCLUDED REVIEW BY INDEPENDENT PEOPLE. REVIEW OF HER ABILITIES AND A DECISION BY THE BOARD MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S GROSS REVENUE INCREASED ABOVE THE $500,000 THRESHOLD AND THE STATE OF MASSACHUSETTS MANDATES AN AUDITED FINANCIAL STATEMENTS WHEN THIS THRESHOLD IS MET.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <ReasonableCauseExplanation documentId="RetDoc2125800001">
      <ExplanationTxt>OUR MAIN REASONS FOR LATE FILING ARE THAT OUR TREASURER, DYAN BLEWETT HAS AN IMMUNE DEFICIENCY DISEASE WHICH REQUIRES WEEKLY MEDICATION AND THIS RESULTS IN HER FEELING POORLY MUCH OF THE TIME. THEREFORE, IT WAS DIFFICULT TO FIND TIME TO GET TOGETHER AND WORK ON THE 990, ESPECIALLY CONSIDERING COVID-19 WAS SPREADING AT A RAMPANT PACE.WE HAD ALSO BEEN WORKING FOR THE PAST TWO YEARS WITH AN ACCOUNTANT, THOMAS PILLERI, WHO HAD HAD FILED OUR REQUEST FOR AN EXTENSION FOR US. THIS YEAR, BECAUSE WE WERE HIRING AN AUDITOR TO UNDERTAKE BOTH AN AUDIT AND FILING OF OUR 990/PC FORMS, HE ASSUMED THAT HE WAS NOT WORKING FOR US. CONSEQUENTLY, HE DID NOT ASK IF WE WANTED AN EXTENSION OR FILE A REQUEST FOR US. HOWEVER, WE THOUGHT THAT HE HAD ALREADY DONE THIS. I BECAME AWARE OF THE FACT THAT WE HAD NOT ASKED FOR AN EXTENSION, ONE WEEK AFTER THE DEADLINE HAD PASSED, WHEN WE ALL MET AS A GROUP TO BEGIN THE AUDIT PROCESS. AT THAT TIME, I CONTACTED THE IRS AND EXPLAINED THE SITUATION AND THE AGENT I SPOKE WITH SAID THERE WAS NOTHING I COULD DO AT THAT TIME, BUT WE ARE REQUESTING LENIENCY REGARDING THE PENALTY.THE MUSEUM FINANCES ARE ALSO RUN BY TRUSTEES, WHO ARE ALSO VOLUNTEERING THEIR TIME.WE DO NOT EXPECT ANY FURTHER LATE FILINGS FROM HERE ON OUT. WE WOULD APPRECIATE THE IRS' UNDERSTANDING.</ExplanationTxt>
    </ReasonableCauseExplanation>
  </ReturnData>
</Return>
