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      <FSAudited>1</FSAudited>
      <AuditCommittee>1</AuditCommittee>
      <FinancialStatementSeparate>X</FinancialStatementSeparate>
      <FederalGrantAuditRequired>0</FederalGrantAuditRequired>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PubliclySupportedOrg170b1Avi>X</PubliclySupportedOrg170b1Avi>
      <GiftsGrantsContribReceived170>
        <CurrentTaxYearMinus4Years>242748</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>350132</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>318717</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>261073</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>294583</CurrentTaxYear>
        <Total>1467253</Total>
      </GiftsGrantsContribReceived170>
      <Total170>
        <CurrentTaxYearMinus4Years>242748</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>350132</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>318717</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>261073</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>294583</CurrentTaxYear>
        <Total>1467253</Total>
      </Total170>
      <PublicSupportTotal170>1467253</PublicSupportTotal170>
      <GrossInvestmentIncome170>
        <CurrentTaxYearMinus4Years>16695</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>19568</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>18241</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>14540</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>14586</CurrentTaxYear>
        <Total>83630</Total>
      </GrossInvestmentIncome170>
      <TotalSupport>1550883</TotalSupport>
      <GrossReceiptsFromAdmissionsEtc>77412</GrossReceiptsFromAdmissionsEtc>
      <PublicSupportPertcentage170>0.94610</PublicSupportPertcentage170>
      <PublicSupportPertcentPriorYear>0.94440</PublicSupportPertcentPriorYear>
      <ThirtyThreePercntTestsCY170>X</ThirtyThreePercntTestsCY170>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInfo>
        <ContributorNumber>RESTRICTED</ContributorNumber>
        <ContributorNameBusiness>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorNameBusiness>
        <ContributorAddressUS>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorAddressUS>
        <AggregateContributions>RESTRICTED</AggregateContributions>
      </ContributorInfo>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CollectUsedForPublicExhibition>X</CollectUsedForPublicExhibition>
      <CollectUsedForScholarResearch>X</CollectUsedForScholarResearch>
      <CollectUsedForPreservation>X</CollectUsedForPreservation>
      <SolicitedAssetsForSale>0</SolicitedAssetsForSale>
      <Land>
        <OtherCostOrOtherBasis>26634</OtherCostOrOtherBasis>
        <BookValue>26634</BookValue>
      </Land>
      <Buildings>
        <OtherCostOrOtherBasis>339148</OtherCostOrOtherBasis>
        <Depreciation>324378</Depreciation>
        <BookValue>14770</BookValue>
      </Buildings>
      <Equipment>
        <OtherCostOrOtherBasis>126184</OtherCostOrOtherBasis>
        <Depreciation>112464</Depreciation>
        <BookValue>13720</BookValue>
      </Equipment>
      <TotalOfBookValueLandBuildings>55124</TotalOfBookValueLandBuildings>
      <TotalRevenue>325220</TotalRevenue>
      <TotalExpenses>331974</TotalExpenses>
      <ExcessOrDeficitForYear>-6754</ExcessOrDeficitForYear>
      <NetUnrealizedGLOnInvestments>41646</NetUnrealizedGLOnInvestments>
      <TotalAdjustments>41646</TotalAdjustments>
      <ExcessOrDeficitPerFS>34892</ExcessOrDeficitPerFS>
      <TotRevenueEtcAuditedFinclStmt>378711</TotRevenueEtcAuditedFinclStmt>
      <NetUnrealizedGainsInvestments>41646</NetUnrealizedGainsInvestments>
      <DonatedSrvcAndUseOfFacilities>6696</DonatedSrvcAndUseOfFacilities>
      <OtherRevenues>5149</OtherRevenues>
      <RevenueNotRptdF990>53491</RevenueNotRptdF990>
      <RevenueSubtotal>325220</RevenueSubtotal>
      <RevenueNotRptdOnFinStmt>0</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>325220</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>343819</TotExpensesEtcAuditedFinclStmt>
      <DonatedServicesUseOfFacilities>6696</DonatedServicesUseOfFacilities>
      <OtherExpensesIncluded>5149</OtherExpensesIncluded>
      <ExpensesNotRptdF990>11845</ExpensesNotRptdF990>
      <ExpensesSubtotal>331974</ExpensesSubtotal>
      <ExpensesNotRptdOnFinStmt>0</ExpensesNotRptdOnFinStmt>
      <TotalExpensesPerForm990>331974</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIV>
        <ReturnReference>PART III, LINE 1A:</ReturnReference>
        <Explanation>IN ACCORDANCE WITH THE PROVISIONS OF GENERALLY ACCEPTED ACCOUNTING PRINCIPLES, THE SOCIETY DOES NOT CAPITALIZE DONATED WORKS OF ART OR RECOGNIZE THEM AS REVENUES OR GAINS ON THE STATEMENT OF ACTIVITIES. THAT STATEMENT PROVIDES THAT SUCH DONATIONS NEED NOT BE RECOGNIZED IF THEY ARE ADDED TO COLLECTIONS THAT ARE HELD FOR PUBLIC EXHIBITION, EDUCATION OR RESEARCH IN FURTHERANCE OF PUBLIC SERVICE RATHER THAN FINANCIAL GAIN; ARE PROTECTED, KEPT UNEMCUMBERED, CARED FOR, AND PRESERVED; AND ARE SUBJECT TO A POLICY THAT REQUIRES THE PROCEEDS FROM SALES OF COLLECTION ITEMS TO BE USED TO ACQUIRE OTHE RITEMS FOR COLLECTIONS. IN ADDITION, ITEMS ACQUIRED THROUGH PURCHASE ARE NOT CAPITALIZED. PURCHASES OF COLLECTION ITEMS ARE RECORDED AS DECREASES IN UNRESTRICTED NET ASSETS IF PUCHASED WITH UNRESTRICTED ASSETS AND AS DECREASED IN TEMPORARILY RESTRICTED OR PERMANENTLY RESTRICTED IF PURCHASED WITH DONOR RESTRICTED ASSETS. PROCEEDS FROM THE SALE OF COLLECTION ITEMS ARE PRESENTED AS A INCREASE IN NET ASSETS. THE SOCIETY'S COLLECTION'S MANAGEMENT POLICY ESTABLISHES FOUR BROAD CATEGORIES OF COLLECTIONS, GENERAL HISTORY, DECORATIVE ARTS, FINE AND FOLK ARTS, AND ETHNOGRAPHIC AND NATURAL HISTORY, WHICH GUIDE THE SOCIETY'S COLLECTING PRACTICES. WITHIN THESE CATAGORIES THER EARE SMALLER GROUPINGS OF DIVERSE HISTORICAL OBJECTS THAT INCLUDE ITEMS SUCH AS ARMS AND ARMAMENT, COSTUMES, TOOLS AND EQUIPMENT, CERAMICS, FURNITURE, GLASS, TEXTILES, PAINTINGS, DRAWINGS, SCULPTURE, GRAPHIC ARTS, MUSICAL INSTRUMENTS,PROJECTILE POINTS AND STONE TOOLS,NATIVE AMERICAN HANDIWORK AND WILDLIFE SPECIMENS. THE GENERAL HISTORY (COSTUME, TOOLS AND EQUIPMENT,DOLLS, TOYS AND GAMES)AND THE DECORATIVE ARTS (CERAMICS, FURNITURE AND TEXTILES) ARE CONSIDERED THE "PRIMARY COLLECTIONS" OF THE SOCIETY. THE LIBRARY AND ARCHIVAL COLLECTIONS ARE DIVIDED INTO TWO BROAD CATEGORIES, EACH WITH SUB-GROUPINGS. THE LIBRARY COLLECTIONS INCLUDE MATERIALS FOR GENERAL HISTORICAL RESEARCH, GENEALOGICAL RESEARCH AND CULTURAL RESOURCE PUBLICATIONS. THE ARCHIVE INCLUDES PERSONAL PAPERS, ACCOUNT BOOKS, DIARIES, MARITIME DOCUMENTS, PHOTOGRAPHS, MAPS AND RAILROAD MATERIALS. THE PHOTOGRAPH COLLECTIONS, AND MANUSCRIPT COLLECTIONS (ORIGINAL DOCUMENTS) ARE IRREPLACEABLE, AND THEREFORE ARE CONSIDERED TO BE OF GREATER IMPORTANCE RELATIVE TO OTHER COLLECTIONS. NO ARTIFACTS OR LIBRARY MATERIALS WERE DEACCESSIONED DURING 2010.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>DESCRIPTION OF UNCERTAIN TAX POSITIONS UNDER FIN 48:</Identifier>
        <ReturnReference>PART X:</ReturnReference>
        <Explanation>ACCOUNTING STANDARDS REQUIRE THAT MANGEMENT EVALUATE THE ACCOUNTING FOR UNCERTAINTY IN TAX POSITIONS. COMPANIES ARE REQUIRED TO RECOGNIZE IN THEIR FINANCIAL STATEMENTS THE IMPACT OF A TAX POSITION IF THE POSITION IS MORE LIKELY THAN NOT OF BEING SUSTAINED ON AUDIT. THE POSITON ASCERTAINED INHERENTLY REQUIRES JUDGMENT AND ESTIMATES BY MANAGEMENT. FOR THE YEAR ENDED DECEMBER 31, 2010 AND 2009 TH SOCIETY DOES NOT BELIEVE THAT THEY HAVE ANY MATERIAL UNCERTAIN TAX POSITIONS THAT WOULD REQUIRE THEM TO MEASURE AND REFLECT THE POTENTIAL LACK OF SUSTAINABILITY OF A POSITION ON AUDIT IN THEIR FINANCIAL STATEMENTS. MANGEMENT WILL CONTINUE TO EVALUATE THEIR TAX POSITIONS TO DETERMINE IF MEASUREMENT AND RECOGNITION IN THE PRESENTATION OF FINANCIAL STATEMENTS IS REQUIRED. THE SOCIETY BELIEVES IT IS NO LONGER SUBJECT TO EXAMINATION PRIOR TO 2007.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>PART XII, LINE 2D - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>COST OF MERCHANDISE SOLD</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>PART XIII, LINE 2D - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>COST OF MERCHANDISE SOLD</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 6</Identifier>
        <Explanation>THE SOCIETY'S MEMBERSHIP IS MAINLY MADE UP OF INDIVIDUALS WHO RESIDE IN THE COUNTY OF SUFFOLK. THE SOCIETY CHARGES A MEMBERSHIP FEE WHICH ENTITLES THE MEMBER TO FREE USE OF THE SOCIETY'S LIBRARY COLLECTIONS, INCLUDING RESEARCH SERVICES AND PHOTOCOPYING OF RESEARCH MATERERIAL AT A REDUCED RATE. MEMBERS ALSO RECIEVE A 10% DISCOUNT IN THE SOCIETY'S MUSEUM GIFT SHOP.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION B, LINE 11</Identifier>
        <Explanation>AN DRAFT COPY OF THE FORM 990 IS PROVIDED TO THE FINANCE COMMITTEE FOR THEIR REVIEW AND APPROVAL PRIOR. THE FINANCE COMMITTEE THEN PRESENTS THE FORM 990 TO THE BOARD OF DIRECTORS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>THE BOARD CONDUCTS A PERFORMANCE AND COMPENSATION REVIEW OF THE EXECUTIVE DIRECTOR WHO IS A KEY EMPLOYEE OF THE SOCIETY. THE BOARD AUTHORIZES ALL SALARY INCREASES. THE EXECUTIVE DIRECTOR CONDUCTS A PERFORMANCE REVIEW OF ALL EMPLOYEES AND REPORTS TO THE BOARD WITH HIS/HER RECOMMENDATIONS. THE BOARD HAS FINAL APPROVAL ON COMPENSATION. COMPARABLE SALARIES IN THE NON PROFIT SECTOR ARE USED BY THE BOARD AS A GUIDELINE.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>THE ORGANIZATIONS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CHANGES IN NET ASSETS OR FUND BALANCES:</Identifier>
        <ReturnReference>FORM 990, PART XI, LINE 5:</ReturnReference>
        <Explanation>NET UNREALIZED GAINS ON INVESTMENTS: 41,646.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>