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        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MACARENA TAMAYO-CALABRESE</PersonNm>
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        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>HARRIET PISTORIO</PersonNm>
        <TitleTxt>CHIEF OPERATING OFFICER</TitleTxt>
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        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
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      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
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      <CompensationFromOtherSrcsInd>1</CompensationFromOtherSrcsInd>
      <CntrctRcvdGreaterThan100KCnt>0</CntrctRcvdGreaterThan100KCnt>
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      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <FeesForServicesLegalGrp>
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        <ProgramServicesAmt>5414</ProgramServicesAmt>
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      <FeesForServicesLobbyingGrp>
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        <ProgramServicesAmt>1454</ProgramServicesAmt>
        <ManagementAndGeneralAmt>25546</ManagementAndGeneralAmt>
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      <FeesForSrvcInvstMgmntFeesGrp>
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        <ManagementAndGeneralAmt>17601</ManagementAndGeneralAmt>
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        <FundraisingAmt>33251</FundraisingAmt>
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        <FundraisingAmt>6694</FundraisingAmt>
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      <InformationTechnologyGrp>
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        <ProgramServicesAmt>1605</ProgramServicesAmt>
      </InformationTechnologyGrp>
      <TravelGrp>
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        <ProgramServicesAmt>42</ProgramServicesAmt>
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      <ConferencesMeetingsGrp>
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        <ProgramServicesAmt>891</ProgramServicesAmt>
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        <FundraisingAmt>5291</FundraisingAmt>
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      <OtherExpensesGrp>
        <Desc>IMLS GRANT EXPENSES</Desc>
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        <ProgramServicesAmt>141277</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>CAPITAL IMPROVEMENTS</Desc>
        <TotalAmt>40399</TotalAmt>
        <ProgramServicesAmt>40399</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>MISCELLANEOUS EXPENSE</Desc>
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      <OtherExpensesGrp>
        <Desc>PRESERVATION ACTIVITIES</Desc>
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      <AllOtherExpensesGrp>
        <TotalAmt>24240</TotalAmt>
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        <EOYAmt>518188</EOYAmt>
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      <AccountsReceivableGrp>
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        <EOYAmt>4857</EOYAmt>
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      <InvestmentsPubTradedSecGrp>
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      <TotalLiabilitiesGrp>
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      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
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        <EOYAmt>0</EOYAmt>
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      <PermanentlyRstrNetAssetsGrp>
        <BOYAmt>991363</BOYAmt>
        <EOYAmt>3242950</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>3845375</BOYAmt>
        <EOYAmt>3745955</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>3848961</BOYAmt>
        <EOYAmt>3747244</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>174485</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-273905</NetUnrlzdGainsLossesInvstAmt>
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      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingOtherInd methodOfAccountingOtherDesc="SEE SCH O">X</MethodOfAccountingOtherInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
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      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleA documentId="RetDoc1039100001">
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        <CurrentTaxYearMinus4YearsAmt>515171</CurrentTaxYearMinus4YearsAmt>
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      <GrossReceiptsAdmissionsGrp>
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      <Total509Grp>
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      <AmountsRcvdDsqlfyPersonGrp>
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      <SubstantialContributorsAmtGrp>
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        <CurrentTaxYearMinus1YearAmt>71586</CurrentTaxYearMinus1YearAmt>
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      <TotalSupportCalendarYearGrp>
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      <InvestmentIncomePYPct>0.05610</InvestmentIncomePYPct>
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    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001" />
    <IRS990ScheduleC documentId="RetDoc1039600001">
      <TotalDirectLobbyingGrp>
        <FilingOrganizationsTotalAmt>27000</FilingOrganizationsTotalAmt>
      </TotalDirectLobbyingGrp>
      <TotalLobbyingExpendGrp>
        <FilingOrganizationsTotalAmt>27000</FilingOrganizationsTotalAmt>
      </TotalLobbyingExpendGrp>
      <OtherExemptPurposeExpendGrp>
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      </TotalExemptPurposeExpendGrp>
      <LobbyingNontaxableAmountGrp>
        <FilingOrganizationsTotalAmt>54260</FilingOrganizationsTotalAmt>
      </LobbyingNontaxableAmountGrp>
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      <TotLbbyngGrassrootMnsNonTxGrp>
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      </TotLbbyngGrassrootMnsNonTxGrp>
      <TotLbbyExpendMnsLbbyngNonTxGrp>
        <FilingOrganizationsTotalAmt>0</FilingOrganizationsTotalAmt>
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      <AvgLobbyingNontaxableAmountGrp>
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        <CurrentYearMinus2Amt>24813</CurrentYearMinus2Amt>
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        <CurrentYearAmt>54260</CurrentYearAmt>
        <TotalAmt>170997</TotalAmt>
      </AvgLobbyingNontaxableAmountGrp>
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      <AvgTotalLobbyingExpendGrp>
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        <CurrentYearMinus1Amt>9000</CurrentYearMinus1Amt>
        <CurrentYearAmt>27000</CurrentYearAmt>
        <TotalAmt>74460</TotalAmt>
      </AvgTotalLobbyingExpendGrp>
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        <CurrentYearMinus1Amt>5653</CurrentYearMinus1Amt>
        <CurrentYearAmt>13565</CurrentYearAmt>
        <TotalAmt>42749</TotalAmt>
      </AvgGrassrootsNontaxableGrp>
      <GrassrootsCeilingAmt>64124</GrassrootsCeilingAmt>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
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      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <SolicitedAssetsSaleInd>0</SolicitedAssetsSaleInd>
      <CYEndwmtFundGrp>
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        <InvestmentEarningsOrLossesAmt>-132526</InvestmentEarningsOrLossesAmt>
        <AdministrativeExpensesAmt>30000</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1806707</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
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        <EndYearBalanceAmt>1969233</EndYearBalanceAmt>
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      <CYMinus2YrEndwmtFundGrp>
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        <AdministrativeExpensesAmt>30500</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1796842</EndYearBalanceAmt>
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        <EndYearBalanceAmt>1706858</EndYearBalanceAmt>
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        <AdministrativeExpensesAmt>30000</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1766934</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.08880</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.91120</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.00000</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>SALES TAX PAYABLE</Desc>
        <Amt>1289</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>1289</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>493252</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>-273905</NetUnrealizedGainsInvstAmt>
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      <RevenueNotReportedAmt>-221340</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>714592</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>17601</InvestmentExpensesNotIncldAmt>
      <RevenueNotReportedFinclStmtAmt>17601</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>732193</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>592672</TotExpnsEtcAuditedFinclStmtAmt>
      <OtherExpensesIncludedAmt>52565</OtherExpensesIncludedAmt>
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      <ExpensesSubtotalAmt>540107</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>17601</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>17601</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>557708</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III, LINE 1A:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COLLECTIONS, WHICH WERE ACQUIRED THROUGH PURCHASES AND CONTRIBUTIONS SINCE THE SOCIETY'S INCEPTION, ARE NOT RECOGNIZED AS ASSETS ON THE STATEMENT OF ASSETS, LIABILITIES AND NET ASSETS. PURCHASES OF COLLECTION ITEMS ARE RECORDED AS DECREASES IN UNRESTRICTED NET ASSETS IN THE YEAR IN WHICH THE ITEMS ARE ACQUIRED, OR AS DECREASES IN TEMPORARILY OR PERMANENTLY RESTRICTED NET ASSETS IF THE ASSETS USED TO PURCHASE THE ITEMS WERE RESTRICTED BY DONORS. CONTRIBUTED COLLECTION ITEMS ARE NOT REFLECTED ON THE FINANCIAL STATEMENTS. PROCEEDS FROM DEACCESSIONS OR INSURANCE RECOVERIES ARE REFLECTED AS INCREASES IN THE APPROPRIATE NET ASSET CLASSES. THE SOCIETY'S COLLECTIONS ARE MADE UP OF ARTIFACTS OF HISTORICAL SIGNIFICANCE AND ART OBJECTS THAT ARE HELD FOR EDUCATIONAL, RESEARCH, AND CURATORIAL PURPOSES. EACH OF THE ITEMS IS CATALOGUED, PRESERVED, AND CARED FOR, AND ACTIVITIES VERIFYING THEIR EXISTENCE AND ASSESSING THEIR CONDITION ARE PERFORMED CONTINUOUSLY. THE COLLECTIONS ARE SUBJECT TO A POLICY THAT REQUIRES PROCEEDS FROM BOARD-APPROVED DEACCESSIONED ITEMS TO BE USED FOR FUTURE COLLECTIONS ACQUISITIONS OR DIRECT CARE OF COLLECTIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MUSEUM'S COLLECTION CONSISTS OF OVER 60,000 ARTIFACTS SELECTED FOR THEIR EXHIBITION AND RESEARCH POTENTIAL RELATIVE TO LIFE IN NORTHEASTERN ILLINOIS, SPECIFICALLY NAPERVILLE, ILLINOIS, A MID-WESTERN TOWN SUPPORTING THE LARGER AGRARIAN, AND LATER RESEARCH AND TECHNOLOGY REGION. THE MUSEUM'S COLLECTION CONTAIN IMPORTANT OBJECTS OF MATERIAL CULTURE RELATED TO THIS REGION, INCLUDING STRUCTURES AND BUILDING COMPONENTS, BUILDING FURNISHINGS, PERSONAL ARTIFACTS, TOOLS AND EQUIPMENT, DISTRIBUTION AND TRANSPORTATION ARTIFACTS, COMMUNICATION ARTIFACTS (INCLUDING ARCHIVAL MATERIALS) AND RECREATIONAL ARTIFACTS. THE OBJECTS HELP FACILITATE UNDERSTANDING OF THE LINKS BETWEEN OUR REGIONAL HISTORY AND THE BROADER CONTEXT OF SIGNIFICANT THEMES IN AMERICAN HISTORY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>IN ACCORDANCE WITH THE INTENT OF THE DONOR, THE SOCIETY ACCUMULATES THE INVESTMENT INCOME TO THE PERMANENT ENDOWMENT UNTIL THE CONTRIBUTIONS AND EARNINGS IN THE ENDOWMENT FUND IS SIGNIFICANT ENOUGH THAT A REASONABLE PERCENTAGE OF THE EARNINGS CAN BE USED TO COVER OPERATING EXPENSES WITHOUT REDUCING THE FUND BALANCE FOR FUTURE YEARS. CURRENTLY, ALL EARNINGS ARE REINVESTED INTO THE FUND.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY IS A NOT-FOR-PROFIT ORGANIZATION THAT IS EXEMPT FROM INCOME TAXES UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE. THE SOCIETY IS NOT CLASSIFIED AS A PRIVATE FOUNDATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>STORE MERCHANDISE 28,145. FUNDRAISING EXPENSES 24,420.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>STORE MERCHANDISE 28,145. FUNDRAISING EXPENSES 24,420.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc1041300001">
      <FundraisingEventInformationGrp>
        <Event1Nm>NAPERVILLE SUMMER NIGHTS</Event1Nm>
        <GrossReceiptsEvent1Amt>198523</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>52477</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>146046</GrossRevenueEvent1Amt>
        <RentFacilityCostsEvent1Amt>38295</RentFacilityCostsEvent1Amt>
        <OtherDirectExpensesEvent1Amt>91239</OtherDirectExpensesEvent1Amt>
        <Event2Nm>OKTOBERFEST</Event2Nm>
        <GrossReceiptsEvent2Amt>86766</GrossReceiptsEvent2Amt>
        <CharitableContriEvent2Amt>22935</CharitableContriEvent2Amt>
        <GrossRevenueEvent2Amt>63831</GrossRevenueEvent2Amt>
        <RentFacilityCostsEvent2Amt>11908</RentFacilityCostsEvent2Amt>
        <OtherDirectExpensesEvent2Amt>28370</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>4</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>118732</GrossReceiptsOtherEventsAmt>
        <CharitableContriOtherEventsAmt>31385</CharitableContriOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>87347</GrossRevenueOtherEventsAmt>
        <RentFcltyCostsOtherEventsAmt>15599</RentFcltyCostsOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>37166</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>404021</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>106797</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>297224</GrossRevenueTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>65802</RentFcltyCostsTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>156775</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>222577</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>74647</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>990 PART VII, SECTION A, LINE 5</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOLLOWING OFFICERS FROM 990 PART VII RECEIVED COMPENSATION FROM THE CITY OF NAPERVILLE, AN UNRELATED ORGANIZATION: - MACARENA TAMAYO-CALABRESE, PRESIDENT &amp; CEO - $ 133,832 - HARRIET PISTORIO, CHIEF OPERATING OFFICER - $ 120,627</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <WorksOfArtGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>2558</ContributionCnt>
        <NoncashContributionsRptF990Amt>0</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>N/A</MethodOfDeterminingRevenuesTxt>
      </WorksOfArtGrp>
      <HistoricalArtifactsGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>679</ContributionCnt>
        <NoncashContributionsRptF990Amt>0</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>N/A</MethodOfDeterminingRevenuesTxt>
      </HistoricalArtifactsGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>VARIOUS ITEMS</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>15250</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>WINE</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>5634</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 33:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ART AND HISTORICAL ARTIFACTS THAT WERE DONATED ARE PART OF THE COLLECTIONS. THE COLLECTIONS, WHICH WERE ACQUIRED THROUGH PURCHASES AND CONTRIBUTIONS SINCE THE SOCIETY'S INCEPTION, ARE NOT RECOGNIZED AS ASSETS ON THE STATEMENT OF ASSETS, LIABILITIES AND NET ASSETS. PURCHASES OF COLLECTION ITEMS ARE RECORDED AS DECREASES IN UNRESTRICTED NET ASSETS IN THE YEAR IN WHICH THE ITEMS ARE ACQUIRED, OR AS DECREASES IN TEMPORARILY OR PERMANENTLY RESTRICTED NET ASSETS IF THE ASSETS USED TO PURCHASE THE ITEMS WERE RESTRICTED BY DONORS. CONTRIBUTED COLLECTION ITEMS ARE NOT REFLECTED ON THE FINANCIAL STATEMENTS. PROCEEDS FROM DEACCESSIONS OR INSURANCE RECOVERIES ARE REFLECTED AS INCREASES IN APPROPRIATE NET ASSET CLASSES.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS, BEING THE GOVERNING BODY OF THE SOCIETY, IS RESPONSIBLE FOR THE REVIEW OF THE ANNUAL FORM 990 FILING. THE FINANCE COMMITTEE OF THE BOARD OF DIRECTORS, CONSISTING OF AT LEAST TWO BOARD MEMBERS, REVIEWS THE FILING ANNUALLY. ONCE APPROVED BY THE FINANCE COMMITTEE, THE FORM 990 IS DISTRIBUTED TO THE REMAINING BOARD MEMBERS FOR THEIR REVIEW PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL EMPLOYEES AND BOARD DIRECTORS ARE REQUIRED TO COMPLETE A CONFLICT OF INTEREST DISCLOSURE FORM ANNUALLY. DISCLOSURES ARE REVIEWED BY THE PRESIDENT &amp; CEO AS APPROPRIATE. DIRECTOR AND EMPLOYEE FORMS ARE MAINTAINED BY THE PRESIDENT &amp; CEO AND VP OF ORGANIZATIONAL RESOURCES, RESPECTIVELY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>NAPER SETTLEMENT, AS A DEPARTMENT OF THE CITY OF NAPERVILLE, USES THE CITY'S ESTABLISHED COMPARABLES TO EVALUATE COMPENSATION TO DETERMINE PAY INCREASES AND PAY GRADES. ON AN ANNUAL BASIS, COMPARABLE COMMUNITIES ON LOCAL AND NATIONAL LEVELS ARE BENCHMARKED FOR ANNUAL MERIT INCREASES AND BONUSES. IN ADDITION, DATA FROM CONSULTING, INFORMATION TECHNOLOGY AND OTHER INDUSTRY TYPES, ALONG WITH DATA FROM TWO LEADING HUMAN RESOURCES CONSULTING CORPORATION, WORLD AT WORK AND HEWITT AND ASSOCIATES, ARE USED TO BENCHMARK ANNUAL SALARIES. ADDITIONALLY, COMPENSATION FOR TOP MANAGEMENT IS REVIEWED BY THE NHS CHAIRMAN.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY FORMS AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC BY CONTACTING THE PRESIDENT &amp; CEO.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER PROFESSIONAL SERVICES: PROGRAM SERVICE EXPENSES 4,535. MANAGEMENT AND GENERAL EXPENSES 79,720. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 84,255. ACCOUNTING: PROGRAM SERVICE EXPENSES 671. MANAGEMENT AND GENERAL EXPENSES 11,792. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 12,463.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ACCOUNTING RECORDS OF THE SOCIETY ARE MAINTAINED ON THE MODIFIED CASH BASIS OF ACCOUNTING WHICH RECOGNIZES CERTAIN REVENUE AND RELATED ASSETS WHEN RECEIVED RATHER THAN EARNED AND CERTAIN EXPENSES WHEN PAID RATHER THAN WHEN THE OBLIGATION IS INCURRED, PLUS RECORDING INVENTORY, INVESTMENTS, AND PROPERTY AND EQUIPMENT AS ASSETS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, LINE 5:</FormAndLineReferenceDesc>
        <ExplanationTxt>SALARY AND BENEFIT EXPENSES ARE RECORDED ON THE BOOKS OF NAPER SETTLEMENT, A SPECIAL REVENUE FUND OF THE CITY OF NAPERVILLE. DURING FISCAL YEAR 2018 THERE WERE 41 POSITIONS TOTALING 35.33 FULL-TIME EQUIVALENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>