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      </GrossReceiptsNonUnrltBusGrp>
      <TaxRevLeviedOrgnztnlBnft509Grp>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft509Grp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>131260</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>479296</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>711806</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>753288</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>635015</CurrentTaxYearAmt>
        <TotalAmt>2710665</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <CurrentTaxYearMinus3YearsAmt>11042</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>15624</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>12215</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>38881</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <CurrentTaxYearMinus3YearsAmt>11042</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>15624</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>12215</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>38881</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>2671784</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>847730</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>581445</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>1429175</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>847730</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>581445</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>1429175</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <TotalAmt>4139840</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.64540</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.70020</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.34520</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.28330</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsPY509Ind>X</ThirtyThrPctSuprtTestsPY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="IRS990ScheduleD-01" softwareId="24020153">
      <LandGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>101162</OtherCostOrOtherBasisAmt>
        <BookValueAmt>101162</BookValueAmt>
      </LandGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>410849</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>334976</DepreciationAmt>
        <BookValueAmt>75873</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>177035</TotalBookValueLandBuildingsAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="IRS990ScheduleO-01" softwareId="24020153">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Organizations process to review form 990 The form 990 is reviewed by the President and Executive Director, prior to filing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Enforcement of Conflicts Policy. The President and Executive Director regularly review the Organizations operations for possible conflicts.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Governing Documents Disclosure Explanation Governing Documents are availabla upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>Organizations Mission: The Organization conducts courses five to six one-week per year in Orthodontics Edgewise Machanics given under The Charles H Tweed Method; Provides loans to Othodontist and Orthodontic Students to take the course and publishes The Tweed Profile, A professional Orthodontic Publication. The course draws students from all over the world.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>