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    <TaxPeriodBeginDt>2023-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>232000502</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>AMERICAN FEDERATION OF TEACHERS Local 3579</BusinessNameLine1Txt>
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      <InCareOfNm>% Anita Dickson</InCareOfNm>
      <BusinessNameControlTxt>AMER</BusinessNameControlTxt>
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        <AddressLine1Txt>3835 GREEN POND RD</AddressLine1Txt>
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        <StateAbbreviationCd>PA</StateAbbreviationCd>
        <ZIPCd>18020</ZIPCd>
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      <PersonNm>Anita Dickson</PersonNm>
      <PersonTitleTxt>Treasurer</PersonTitleTxt>
      <SignatureDt>2024-09-30</SignatureDt>
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    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
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      <WebsiteAddressTxt>3835 Green Pond Road</WebsiteAddressTxt>
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      <PrimaryExemptPurposeTxt>See Schedule O</PrimaryExemptPurposeTxt>
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        <PersonNm referenceDocumentName="CompensationExplanation">Mario Acerra</PersonNm>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Christine Armstrong</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Annie Laurie Meyers</PersonNm>
        <TitleTxt>Secretary</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>5</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
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        <PersonNm referenceDocumentName="CompensationExplanation">Anita Dickson</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
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        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
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      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Sonia Massie</PersonNm>
        <TitleTxt>Executive Delegate Monroe Campus</TitleTxt>
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        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
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      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Dustin Briggs</PersonNm>
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        <CompensationAmt>0</CompensationAmt>
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        <PersonNm referenceDocumentName="CompensationExplanation">Catherine Kehler</PersonNm>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Amy Van Varick</PersonNm>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 10</FormAndLineReferenceDesc>
        <ExplanationTxt>| Grants And Similar Amounts Paid:, Amount:| Bill Mutimer Memorial Scholarship-$500 Jacey Mitchell Death of Husband-$250 Western PA Hospital Foundation-$100 Catarina DiMario Death of Husband $250, $1100|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>| Other Expenses:, Amount:| American Federation of Teachers Per Capita Taxes $48066, $48066|</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part II, line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>| Explanation:, BOYAmount:, EOYAmount:| Cash, $, $| Savings, $, $| Investments, $, $|</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part II, line 26</FormAndLineReferenceDesc>
        <ExplanationTxt>| Explanation:, BOYAmount:, EOYAmount:| Accounts Payable, $, $| Grants Payable, $, $| Mortgages or other loans payable, $, $|</ExplanationTxt>
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