This handwritten caption, from a U.S. Navy veteran's personal wartime album, reads: 'Commander Cassidy and prize crew for sub coming alongside from Proteus (sub tender).' It documents the historic transfer of custody of a surrendered Japanese submarine to U.S. Navy control, an event associated with USS Proteus (AS-19) in Tokyo Bay at the close of World War II, when several Imperial Japanese Navy submarines, including the giant I-400-class boats, were formally surrendered to American forces. Project: 218722