. . "John Joseph Perko (February 20, 1914 - June 7, 1994) was a professional football player for eight seasons in the National Football League. He played for Pittsburgh Pirates-Steelers his entire career. In 1944, he also played on the Steelers-Chicago Cardinals merged team, \"Card-Pitt\". Prior to playing professional football, Perko played at the college level while attending Duquesne University."@en . "1914-02-20Z"^^ . . "1994Z"^^ . "1914Z"^^ . "Perko, John"@en . "1994-06-07Z"^^ . "American football player" .