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        <Desc>INVESTMENTS</Desc>
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      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>6153518</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>253568</NetUnrealizedGainsInvstAmt>
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      <RevenueSubtotalAmt>5899950</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
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        <ExplanationTxt>APS RECEIVES CONTRIBUTIONS OF VARIOUS STAMP COLLECTIONS AND REFERENCE AND RESEARCH MATERIALS. THESE NON-CASH CONTRIBUTIONS ARE NOT CAPITALIZED AND SO, IN ACCORDANCE WITH FASB ASC 958-605-25-19, NO REVENUE IS RECOGNIZED FROM THE CONTRIBUTION. IF THE CONTRIBUTED ASSETS ARE RESOLD BY THE ORGANIZATION ANY PROCEEDS FROM THE SALE ARE RECORDED AS AN INCREASE TO THE APPROPRIATE CLASS OF NET ASSETS IN ACCORDANCE WITH FASB ASC 958-360-45-5.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAINTAINS A REFERENCE COLLECTION OF GENUINE, FAKE, AND COUNTERFEIT POSTAGE STAMPS FOR REVIEW OF SCHOLARS AND TO ASSIST THE EXPERTIZATION PROCESS. OTHER ITEMS ARE MAINTAINED FOR DISPLAYS OF EDUCATIONAL EXHIBITS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>INCOME GENERATED FROM THE ENDOWMENT FUNDS ARE USED TO HELP COVER PROGRAM COSTS</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS EXAMINED ITS POSITIONS AND BELIEVES THEY WILL BE SUSTAINED UPON EXAMINATION.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XI, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES INCURRED FROM THE UNRELATED BUSINESS ACTIVITIES ARE NETTED WITH UNRELATED BUSINESS INCOME FOR 990 REPORTING</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES INCURRED FROM THE UNRELATED BUSINESS ACTIVITIES ARE NETTED WITH UNRELATED BUSINESS INCOME FOR 990 REPORTING</ExplanationTxt>
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        <PersonNm>SCOTT D ENGLISH</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR</TitleTxt>
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        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>12565</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>237565</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
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        <ContributionCnt>2000</ContributionCnt>
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      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
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        <FormAndLineReferenceDesc>Part I, Line 32b:</FormAndLineReferenceDesc>
        <ExplanationTxt>AT TIMES, THE APS USES STAMP AUCTION HOUSES TO SELL CONTRIBUTED STAMPS THAT HAVE BEEN HELD BEYOND THREE YEARS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 33:</FormAndLineReferenceDesc>
        <ExplanationTxt>APS RECEIVES CONTRIBUTIONS OF VARIOUS STAMP COLLECTIONS AND REFERENCE AND RESEARCH MATERIALS. THESE NON-CASH CONTRIBUTIONS ARE NOT CAPITALIZED AND SO, IN ACCORDANCE WITH FASB ASC 958-605-25-19, NO REVENUE IS RECOGNIZED FROM THE CONTRIBUTION. IF THE CONTRIBUTED ASSETS ARE RESOLD BY THE ORGANIZATION ANY PROCEEDS FROM THE SALE ARE RECORDED AS AN INCREASE TO THE APPROPRIATE CLASS OF NET ASSETS IN ACCORDANCE WITH FASB ASC 958-360-45-5.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AMERICAN PHILATELIC SOCIETY HAS DUES PAYING MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DUES PAYING MEMBERS ELECT THE BOARD OF DIRECTORS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE DUES PAYING MEMBERS VOTE ON THE ORGANIZATION'S BY-LAWS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPLETED FORM IS PROVIDED TO THE FINANCE/AUDIT COMMITTEE AND BOARD OF DIRECTORS FOR REVIEW PRIOR TO FILING THE RETURN; IF REVIEW DOES NOT COINCIDE WITH A REGULARLY SCHEDULED BOARD MEETING, COMMENTS ARE PROVIDED TO THE CONTROLLER VIA PHONE &amp; EMAIL</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>DATA FROM THE AMERICAN SOCIETY OF ASSOCIATION EXECUTIVES (ASAE) IS OBTAINED AND USED TO DETERMINE THE STANDARD RANGES FOR SIMILAR POSITIONS IN SIMILAR SIZED ORGANIZATIONS (I.E., REVENUE AND NO. OF EMPLOYEES) AND THE SAME GEOGRAPHICAL AREA</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>CURRENTLY, THE ORGANIZATION POSTS THE ANNUAL FINANCIAL STATEMENTS ON THE WEBSITE. ANY MEMBER CAN REQUEST AND THE ORGANIZATION WILL PROVIDE ANY GOVERNING DOCUMENTS OR CONFLICT OF INTEREST POLICY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, line 24e</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPUTER SUPPLIES &amp; EXPENSES: Program service expenses 117,282. Management and general expenses 33,442. Fundraising expenses 549. Total expenses 151,273. PROFESSIONAL SERVICES: Program service expenses 84,343. Management and general expenses 27,668. Fundraising expenses 0. Total expenses 112,011. TRANSFERS: Program service expenses 270,355. Management and general expenses -165,730. Fundraising expenses 0. Total expenses 104,625. LOSS CLAIMS: Program service expenses 96,629. Management and general expenses 0. Fundraising expenses 0. Total expenses 96,629. COLLECTION &amp; RECOVERY COSTS: Program service expenses 10,989. Management and general expenses 82,310. Fundraising expenses 0. Total expenses 93,299. CREDIT CARD COSTS: Program service expenses 56,554. Management and general expenses 14,842. Fundraising expenses 3,483. Total expenses 74,879. MISC OTHER: Program service expenses 8,382. Management and general expenses 18,743. Fundraising expenses 2,074. Total expenses 29,199. COST OF GOODS SOLD: Program service expenses 22,886. Management and general expenses 4,338. Fundraising expenses 0. Total expenses 27,224. INTEROFFICE: Program service expenses 148,975. Management and general expenses -351,371. Fundraising expenses -5,855. Total expenses -208,251.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY'S FINANCE/AUDIT COMMITTEE IS RESPONSIBLE FOR SELECTION OF THE AUDITOR, ENGAGING AN AUDIT AND MEETING WITH THE AUDITOR THROUGHOUT THE AUDIT PROCESS. THE COMMITTEE SHARES ITS OBSERVATIONS WITH THE ENTIRE BOARD.</ExplanationTxt>
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          <BusinessNameLine1Txt>AMERICAN PHILATELIC RESEARCH LIBRARY</BusinessNameLine1Txt>
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        <MethodOfAmountDeterminationTxt>FAIR VALUE</MethodOfAmountDeterminationTxt>
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