Philadelphia, PA—The Greater Philadelphia Cultural Alliance’s STAMP (Students at Museums in Philly) program is planning a blockbuster event for Philadelphia teens, STAMP in Old City, on Thursday, August 14, from 3:30-6:30pm. Hundreds of Philadelphia teens, including participants in Philadelphia Youth Network’s WorkReady Philadelphia internship program, will converge on the historic district for a free afternoon of live music, games and parties throughout six of the area’s top museums and attractions.