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      <OtherSecuritiesGrp>
        <Desc>VANGUARD EXTENDED MARKET INDEX FUND</Desc>
        <BookValueAmt>951424</BookValueAmt>
        <MethodValuationCd>C</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>8231971</TotalBookValueSecuritiesAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Schedule attached</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <IRCSectionDesc>All are 501(c)(3)</IRCSectionDesc>
        <ValuationMethodUsedDesc>All grants are made in cash</ValuationMethodUsedDesc>
        <NonCashAssistanceDesc>All grants are made in cash</NonCashAssistanceDesc>
        <PurposeOfGrantTxt>General support</PurposeOfGrantTxt>
      </RecipientTable>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization maintains complete and accurate written and electronic records as to the amounts of the grants it makes. The recipients of the grants are identified by contributors. The organization verifies that the recipient is a 501(c)(3) organization that is not a private foundation before the grants are actually disbursed.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>86</ContributionCnt>
        <MethodOfDeterminingRevenuesTxt>Market quotes</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <SecuritiesCloselyHeldStockGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>2</ContributionCnt>
        <MethodOfDeterminingRevenuesTxt>Appraisal</MethodOfDeterminingRevenuesTxt>
      </SecuritiesCloselyHeldStockGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Hills Bank &amp; Trust Company acts as sole Trustee. Dwight O. Seegmiller and Bradford C. Zuber are senior officers of Hills Bank and Trust Company and make the necessary decisions for the Trustee.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Two senior officers of the Trustee carefully review and examine the Form 990 before it is signed and thoroughly discuss any questions either them may have with the preparer of the Form 990.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>There is a small number of officers and employees of the trustee of the organization and avoidance of conflicts of interests is done on an informal basis. The officers of the trustee know all of the organization's donors on a personal basis and would advise a donor if the trustee or any of its officers or employees was sufficiently involved with a recipient organization as to create a conflict of interest.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 18</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization does not have a web site. All governing documents, conflict of interest policy and financial statements are available to the public at 590 Forevergreen Road, North Liberty, Iowa 52317.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization does not have a web site. All governing documents, conflict of interest policy and financial statements are available to the public at 590 Forevergreen Road, North Liberty, Iowa 52317.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>