Convention Between the Government of the United States of America and the Government of the Polish People's Republic for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income (1974 October 8) Convention Between the United States of America and the Republic of Poland for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income (2013 February 13)