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      <TotRevenueEtcAuditedFinclStmt>1209402</TotRevenueEtcAuditedFinclStmt>
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        <ReturnReference>PART III, LINE 4:</ReturnReference>
        <Explanation>THE COLLECTIONS, WHICH WERE ACQUIRED THROUGH PURCHASES AND CONTRIBUTIONS SINCE THE MUSEUM'S INCEPTION, ARE NOT RECOGNIZED AS ASSETS ON THE STATEMENTS OF FINANCIAL POSITION. PURCHASES OF COLLECTION ITEMS ARE RECORDED AS DECREASES IN UNRESTRICTED NET ASSETS IN THE YEAR IN WHICH THE ITEMS ARE ACQUIRED OR AS TEMPORARILY OR PERMANENTLY RESTRICTED NET ASSETS, IF THE ASSETS USED TO PURCHASE THE ITEMS ARE RESTRICTED BY DONORS. CONTRIBUTED COLLECTION ITEMS ARE NOT REFLECTED ON THE FINANCIAL STATEMENTS.</Explanation>
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      <Form990ScheduleDPartXIV>
        <Identifier>DESCRIPTION OF UNCERTAIN TAX POSITIONS UNDER FIN 48:</Identifier>
        <ReturnReference>PART X:</ReturnReference>
        <Explanation>THE MUSEUM HAS ADOPTED THE GUIDANCE IN FASB ASC 740, INCOME TAXES. THIS GUIDANCE PRESCRIBES A RECOGNITION THRESHOLD AND MEASUREMENT ATTRIBUTE FOR THE FINANCIAL STATEMENT RECOGNITION AND MEASUREMENT OF A TAX POSITION TAKEN OR EXPECTED TO BE TAKEN IN A TAX RETURN. ADOPTION OF THIS GUIDANCE DID NOT HAVE A MATERIAL IMPACT ON THE MUSEUMS RESULTS OF OPERATIONS AND FINANCIAL POSITION.</Explanation>
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        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
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        <NameOfInterestedPerson>
          <NamePerson>MR LEE A BUTZ</NamePerson>
        </NameOfInterestedPerson>
        <Relationship>MR. LEE A BUTZ SERVES ON THE BOARD OF DIRECTORS OF NMIH.</Relationship>
        <AmountOfTransaction>78224</AmountOfTransaction>
        <DescriptionOfTransaction>MR. LEE A BUTZ SERVES AS A MEMBER OF THE BOARD OF DIRECTORS FOR THE NATIONAL MUSEUM OF INDUSTRIAL HISTORY AND ALSO SERVES AS A CHAIRMAN OF THE BOARD FOR A.H. BUTZ, INC. NMIH ENGAGED A.H. BUTZ, INC. TO PROVIDE PROJECT MANAGEMENT SERVICES FOR CERTAIN IMPROVEMENTS TO THE MUSEUM'S BUILDINGS. DURING THE YEAR ENDED DECEMBER 31, 2010, MANAGEMENT FEES WHICH INCLUDED SERVICES OF SUB-CONTRACTORS PAID TO A.H. BUTZ, INC. AMOUNTED TO $78,224.</DescriptionOfTransaction>
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      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION B, LINE 11</Identifier>
        <Explanation>INFORMATION IS PROVIDED TO OUR INDEPENDENT ACCOUNTANTS WHO COMPILE THE FORM 990. THE FORM IS THEN REVIEWED BY MANAGEMENT. THE FORM IS THEN PRESENTED TO THE BOARD OF DIRECTORS FOR REVIEW AND COMMENT PRIOR TO FILING.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12C</ReturnReference>
        <Explanation>ON AN ANNUAL BASIS, THE ORGANIZATION PROVIDES THE BOARD MEMBERS WITH A COPY OF THE CONFLICT OF INTEREST POLICY. THE BOARD MEMBERS ARE REQUIRED TO REVIEW THE POLICY AND INDICATE ANY ACTIVITIES THAT MAY REPRESENT A CONFLICT OF INTEREST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>THE ORGANIZATION USES A COMPENSATION COMMITTEE, COMPENSATION SURVEY AND STUDY AND THEN APPROVAL BY THE COMPENSATION COMMITTEE AND THE BOARD TO DETERMINE COMPENSATION OF OFFICERS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 18</ReturnReference>
        <Explanation>THE ORGANIZATION MAKES AVAILABLE TO THE PUBLIC ALL OF THE GOVERNING DOCUMENTS SUCH AS THE FORM 1023 AND FORM 990. ALL ARE AVAILABLE UPON REQUEST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>THE ORGANIZATION MAKES AVAILABLE TO THE PUBLIC ALL OF THE GOVERNING DOCUMENTS SUCH AS THE FORM 1023, FORM 990, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS. ALL DOCUMENTS ARE AVAILABLE FOR INSPECTION UPON REQUEST AT THE ORGANIZATION'S CORPORATE OFFICE.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990 PART XI 2C</ReturnReference>
        <Explanation>THE ORGANIZATION DOES HAVE AN AUDIT COMMITTEE THAT ASSUMES OVERSIGHT OVER THE INDEPENDENT AUDITOR.</Explanation>
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