Keywords: Philadelphia-Navy-Yard-1942.jpg Philadelphia Navy Yard 1942 USS Gherardi at left and USS Butler ready for launching http //www history navy mil/photos/sh-usn/usnsh-b/dd636-v htm 1942-02-12 Official U S Navy Photograph from the collections of the Naval Historical Center Photo NH 99109 PD-USGov-Military-Navy Philadelphia Naval Shipyard |