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        <Description>DERIVATIVE FINANCIAL INSTRUMENTS</Description>
        <Amount>840455</Amount>
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      <TotalOfAmounts>840455</TotalOfAmounts>
      <TotalRevenue>6412918</TotalRevenue>
      <TotalExpenses>8834112</TotalExpenses>
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      <NetUnrealizedGainsInvestments>1340928</NetUnrealizedGainsInvestments>
      <DonatedSrvcAndUseOfFacilities>20500</DonatedSrvcAndUseOfFacilities>
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        <Identifier>Part III, Line 4:</Identifier>
        <Explanation>Boston Childrens Museum has been a collecting institution since its beginning in 1913 and today the collections number approximately 50,000 objects, including cultural artifacts and natural history specimens, which can be broken into six main collecting areas, Native American, Japanese, Americana, Global Dolls, General Cultural Collections, and Natural History. The collection is most frequently used to enhance museum exhibits, for scholarly research, as well as educational programming.</Explanation>
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      <Form990ScheduleDPartXIV>
        <Identifier>Part V, Line 4:</Identifier>
        <ReturnReference>Description of Intended Use of Endowment Funds:</ReturnReference>
        <Explanation>THE ORGANIZATION'S TERM ENDOWMENTS ARE USED FOR THE FOLLOWING PURPOSES: 1) CAPITAL CAMPAIGN, 2) EXHIBITS AND 3) OTHER PROGRAMS. THE MUSEUM USES ITS PERMANENT ENDOWMENTS IN ACCORDANCE WITH UPMIFA AND SPENDS FOUR-AND-A-HALF PERCENT OF THE AVERAGE OF THE FMV OF EACH OF THE PREVIOUS 12 QUARTERS TO SUPPORT CURRENT OPERATIONS. THE BOARD-DESIGNATED AND QUASI-ENDOWMENTS ARE USED AT THE BOARD'S DISCRETION.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>Part X:</Identifier>
        <ReturnReference>Description of Uncertain Tax Positions Under FIN 48:</ReturnReference>
        <Explanation>THE MUSEUM HAS EVALUATED THE TAX POSITIONS TAXEN ON RETURNS FOR OPEN YEARS AND THOSE EXPECTED TO BE TAKEN ON RETURNS FOR JUNE 30, 2010. IT IS MANAGEMENT'S BELIEF THAT SUCH TAX POSITIONS ARE MORE LIKELY THAN NOT TO BE SUSTAINED UPON EXAMINATION BY TAX AUTHORITIES. ACCORDINGLY, NO LIABILITY FOR UNCERTAIN TAX POSITIONS HAS BEEN REFLECTED IN THESE FINANCIAL STATEMENTS. RETURNS FOR TAX YEARS BEGINNING WITH THOSE FILED FOR JUNE 30, 2007 ARE OPEN TO EXAMINATION.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>Part XI, Line 8 - Other Adjustments:</Identifier>
        <Explanation>UNREALIZED LOSS ON DERIVATIVE INSTRUMENTS: -136715. BOOK-TAX RENTAL INCOME ADJUSTMENT PER IRC 467: 165165.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
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        <Explanation>SPECIAL EVENTS EXPENSES: 40322. RENTAL EXPENSES: 1583117. BOOK-TAX RENTAL INCOME ADJUSTMENT PER IRC 467: 165165. UNREALIZED LOSS ON DERIVATIVE FINANCIAL INSTRUMENTS: -136715.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>Part XIII, Line 2d - Other Adjustments:</Identifier>
        <Explanation>SPECIAL EVENTS EXPENSES: 40322. rental expenses: 1583117.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
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        <NameOfEvent1>HOME EDITION</NameOfEvent1>
        <GrossReceiptsEvent1>86100</GrossReceiptsEvent1>
        <GrossRevenueEvent1>86100</GrossRevenueEvent1>
        <OtherDirectExpensesEvent1>29398</OtherDirectExpensesEvent1>
        <NameOfEvent2>BIG APPLE CIRCUS</NameOfEvent2>
        <GrossReceiptsEvent2>119376</GrossReceiptsEvent2>
        <GrossRevenueEvent2>119376</GrossRevenueEvent2>
        <OtherDirectExpensesEvent2>10924</OtherDirectExpensesEvent2>
        <GrossReceiptsTotal>205476</GrossReceiptsTotal>
        <GrossRevenueTotalEvents>205476</GrossRevenueTotalEvents>
        <OtherDirectExpensesTotalEvents>40322</OtherDirectExpensesTotalEvents>
        <DirectExpenseSummaryEvents>40322</DirectExpenseSummaryEvents>
        <NetIncomeSummary>165154</NetIncomeSummary>
      </EventsInformation>
    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
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      <Form990OfOtherOrganizations>X</Form990OfOtherOrganizations>
      <WrittenEmploymentContract>X</WrittenEmploymentContract>
      <CompensationSurvey>X</CompensationSurvey>
      <BoardOrCommitteeApproval>X</BoardOrCommitteeApproval>
      <SeverancePayment>0</SeverancePayment>
      <SupplementalNonqualRetirePlan>0</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>0</EquityBasedCompArrangement>
      <CompBasedOnRevenueOfFilingOrg>0</CompBasedOnRevenueOfFilingOrg>
      <CompBasedOnRevenueRelatedOrgs>0</CompBasedOnRevenueRelatedOrgs>
      <CompBasedNetEarningsFilingOrg>0</CompBasedNetEarningsFilingOrg>
      <CompBasedNetEarningsRelateOrgs>0</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>0</AnyNonFixedPayments>
      <InitialContractException>0</InitialContractException>
      <Form990ScheduleJPartII>
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          <BusinessNameLine1>LOU CASAGRANDE</BusinessNameLine1>
        </NameBusiness>
        <BaseCompensationFilingOrg>158499</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>0</DeferredCompFilingOrg>
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        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
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        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
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      <Form990ScheduleKPartI>
        <IssuerName>
          <BusinessNameLine1>MASSACHUSETTS DEVELOPMENT FINANCE AGENCY</BusinessNameLine1>
        </IssuerName>
        <IssuerEIN>043431181</IssuerEIN>
        <CUSIPNumber>57583RGQ2</CUSIPNumber>
        <DateIssued>2006-09-25</DateIssued>
        <DescriptionOfPurpose>SEE SCHEDULE 0</DescriptionOfPurpose>
        <Defeased>0</Defeased>
        <OnBehalfOfIssuer>0</OnBehalfOfIssuer>
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        <AmountDefeased>6921695</AmountDefeased>
        <IssuanceCostsFromProceeds>396523</IssuanceCostsFromProceeds>
        <CapitalExpenditures>22681782</CapitalExpenditures>
        <YearOfSubstCompletion>2007</YearOfSubstCompletion>
        <CurrentRefunding>1</CurrentRefunding>
        <AdvanceRefunding>0</AdvanceRefunding>
        <FinalAllocationMade>1</FinalAllocationMade>
        <AdequateBooksAndRecdsMaintaind>1</AdequateBooksAndRecdsMaintaind>
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        <AnyResearchAgreements>0</AnyResearchAgreements>
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        <HedgeIdentifiedInBooksAndRecds>1</HedgeIdentifiedInBooksAndRecds>
        <NameOfHedgeProvider>
          <BusinessNameLine1>CITIZENS BANK</BusinessNameLine1>
        </NameOfHedgeProvider>
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        <GrossProceedsInvestedInGIC>0</GrossProceedsInvestedInGIC>
        <GrossProceedsInvested>0</GrossProceedsInvested>
        <ExceptionToRebate>0</ExceptionToRebate>
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      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Section B, line 11</Identifier>
        <Explanation>THE FINANCE AND AUDIT COMMITTEES ARE THE GOVERNING BODIES THAT HAVE RESPONSIBILITY FOR REVIEWING THE FORM 990. THIS FORM WAS DISTRIBUTED BY EMAIL TO THESE COMMITTEES PRIOR TO THE FILING DATE, LEAVING TIME FOR QUESTIONS AND COMMENTS. IN ADDITION, THE ENTIRE BOARD OF TRUSTEES ALSO RECEIVED A COPY OF THE FORM 990 AND WAS INVITED TO RAISE ISSUES OR QUESTIONS PRIOR TO THE FILING OF THE FORM 990.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Section B, line 12c</Identifier>
        <Explanation>ON AN ANNUAL BASIS, THE MUSEUM ASKS ALL THE TRUSTEES AND KEY EMPLOYEES TO REVIEW AND EXECUTE A CONFLICT OF INTEREST POLICY STATEMENT. IT IS THE RESPONSIBILITY OF THE PRESIDENT, CEO AND/OR THE CHAIR TO REVIEW AND DISCLOSE CONFLICTS AND HANDLE THE MATTER AS HE OR SHE DEEMS APPROPRIATE. THE CONFLICT OF INTEREST POLICY STATEMENT ALSO OBLIGATES EACH FIDUCIARY, ON AN ONGOING BASIS, TO REPORT ANY CONFLICTS EITHER EXISTING OR PERCEIVED TO THE PRESIDENT OR CHIEF EXECUTIVE OFFICER.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Section B, line 15a</Identifier>
        <Explanation>THE PROCESS FOR REVIEWING AND DETERMINING THE CEO'S COMPENSATION IS AS FOLLOWS: THERE IS AN AD HOC COMPENSATION COMMITTEE, WHICH IS A SUBSET OF THE EXECUTIVE COMMITTEE OF THE BOARD OF TRUSTEES AND CONVENES TO REVIEW MARKET DATA FOR THIS POSITION. BASED ON THIS REVIEW, A COMPENSATION PACKAGE WAS AGREED UPON. THIS PROCESS WAS ADOPTED IN THE FALL OF 2008.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Section C, line 19</Identifier>
        <Explanation>GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS ARE MADE AVAILABLE UPON REQUEST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART XI, LINE 2C</Identifier>
        <ReturnReference>AUDIT COMMITTEE RESPONSIBILITY</ReturnReference>
        <Explanation>THE AUDIT COMMITTEE ASSUMES RESPONSIBILITY FOR OVERSIGHT OF THE AUDIT OF THE MUSEUM'S FINANCIAL STATEMENTS AND SELECTION OF THE INDEPENDENT AUDITOR. THIS PROCESS HAS NOT CHANGED FROM THE PRIOR YEAR.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>SCHEDULE K, PART 1, BOND ISSUANCE:</Identifier>
        <ReturnReference>DESCRIPTION OF BOND PURPOSE</ReturnReference>
        <Explanation>FINANCE AND REFINANCE THE CAPITAL COSTS OF THE A)ACQUISITION,CONSTRUCTION, RENOVATION, AND EQUIPPING OF THE BORROWER'S FACILITES, B) PROJECTS ORIGINALLY FINANCES WITH SERIES 2001 BONDS, AND C) CERTAIN COSTS OF ISSUANCE.</Explanation>
      </GeneralExplanation>
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