What is soupy island?

Soupy Island was an island In N. J.. A boat from Penn Treaty's Pier in Philadelphia, took kids from the Fishtown and Kensington area of Phila. for a day. The kids got a day playing at the park. They also got free soup and milk there. I remember going there many times as a kid in the 50's. http:/www.unlikelystories.org/old/archives/triptosoupy.html