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        <CurrentTaxYearMinus1YearAmt>1289595</CurrentTaxYearMinus1YearAmt>
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        <CurrentTaxYearMinus1YearAmt>1289595</CurrentTaxYearMinus1YearAmt>
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      <FootnoteTextInd>X</FootnoteTextInd>
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        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BUREAU IS A NOT-FOR-PROFIT ORGANIZATION EXEMPT FROM FEDERAL INCOME TAX UNDER SECTION 501(C)(6) OF THE INTERNAL REVENUE CODE AND IS EXEMPT FROM SIMILAR STATE AND LOCAL TAXES. ALTHOUGH THE BUREAU WAS GRANTED INCOME TAX EXEMPTION BY THE INTERNAL REVENUE SERVICE, SUCH EXEMPTION DOES NOT APPLY TO "UNRELATED BUSINESS TAXABLE INCOME." SUCH INCOME, PURSUANT TO THE INTERNAL REVENUE CODE AND RELATED REGULATIONS, INCLUDES INVESTMENT INCOME SUCH AS INTEREST RECEIVED FROM SOURCES OTHER THAN DIRECTLY FROM THE MEMBERSHIP. THE BUREAU HAS BEEN CLASSIFIED AS NOT A PRIVATE FOUNDATION. THE BUREAU ANALYZES ITS INCOME TAX FILING POSITIONS IN THE FEDERAL AND STATE JURISDICTIONS WHERE IT IS REQUIRED TO FILE INCOME TAX RETURNS, FOR ALL OPEN TAX YEARS IN THESE JURISDICTIONS, TO IDENTIFY POTENTIAL UNCERTAIN TAX POSITIONS. THE BUREAU HAS EVALUATED ITS INCOME TAX FILING POSITIONS FOR YEARS 2014 THROUGH 2017, THE YEARS WHICH REMAIN SUBJECT TO EXAMINATION AS OF DECEMBER 31, 2017. THE BUREAU CONCLUDED THAT THERE ARE NO SIGNIFICANT UNCERTAIN TAX POSITIONS REQUIRING RECOGNITION IN THE BUREAU'S FINANCIAL STATEMENT. THE BUREAU DOES NOT EXPECT THE TOTAL AMOUNT OF UNRECOGNIZED TAX BENEFITS ("UTB") (E.G. TAX DEDUCTIONS, EXCLUSIONS, OR CREDITS CLAIMED OR EXPECTED TO BE CLAIMED) TO SIGNIFICANTLY CHANGE IN THE NEXT TWELVE MONTHS. THE BUREAU DOES NOT HAVE ANY AMOUNTS ACCRUED FOR INTEREST AND PENALTIES RELATED TO UTBS AT DECEMBER 31, 2017 AND 2016, AND IS NOT AWARE OF ANY CLAIMS FOR SUCH AMOUNTS BY FEDERAL OR STATE INCOME TAX AUTHORITIES.</ExplanationTxt>
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    <IRS990ScheduleI documentId="RetDoc1041900001">
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      <RecipientTable>
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          <BusinessNameLine1Txt>CITY OF MACKINAC ISLAND</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 455</AddressLine1Txt>
          <CityNm>MACKINAC ISLAND</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>49757</ZIPCd>
        </USAddress>
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        <NonCashAssistanceAmt>52705</NonCashAssistanceAmt>
        <ValuationMethodUsedDesc>COST</ValuationMethodUsedDesc>
        <NonCashAssistanceDesc>COST OF CONSTRUCTION IN PROCESS OF BUILDING TO BE DONATED TO THE CITY</NonCashAssistanceDesc>
        <PurposeOfGrantTxt>TO PROVIDE CITY WITH BUILDING</PurposeOfGrantTxt>
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      <Total501c3OrgCnt>1</Total501c3OrgCnt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>PAYMENTS ARE TRACKED IN THE TAX-EXEMPT ORGANIZATION'S QUICKBOOKS ACCOUNTING SOFTWARE.</ExplanationTxt>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE DIRECTOR REVIEWS THE FORM 990 BEFORE IT IS FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARDS (BOTH MACKINAC ISLAND CONVENTION &amp; VISITORS BUREAU AND MACKINAC ISLAND TOURISM BUREAU) REVIEW EACH YEAR AND ALSO RELIES ON THE MICHIGAN ASSOCIATION OF CVB EXECUTIVE DIRECTOR COMPENSATION SURVEYS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THROUGH THE MEDC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>ROUNDING ADJUSTMENT -1.</ExplanationTxt>
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</Return>