Fifty years ago, the release of Billy Paul's Going East on LP and The Ebonys' "You're the Reason Why" on a 45 RPM single marked the birth of Philadelphia International Records. By 1971, co-founders Kenny Gamble and Leon Huff had already garnered significant chart success with their songs and productions for such artists as The Soul Survivors ("Expressway to Your Heart"), The Intruders ("Cowboys to Girls"), Archie Bell and the Drells ("(There's Gonna Be A) Showdown"), Lesley Gore, Dusty