Llanview (One Life To Live) and Pine Valley (All My Children) were fictional suburbs of Philadelphia although I don’t even think they referred to Philly by name. Agnes Nixon (who created both shows) lived in a suburb of Philadelphia and there were often references on AMC to “center city” and “Locust Street” where the character who was prostituting herself would go (and at the time was a red light district in Philly at the time). One of OLTL’s opening featured photo montages including center city Philly’s skyline and a newsstand prominently featuring the Philadelphia Inquirer