Documenting the Panama Canal's Pedro Miguel Locks, this 1938 scrapbook page captures both the engineering of the canal system, including one of its distinctive electric towing 'mules,' and the recreational life of American sailors ashore at the Balboa Club. The final photograph records the USS Trenton itself being lowered through the locks under a flying American flag, a fitting emblem of the U.S. Navy's routine but historically significant use of this strategic waterway during the interwar years. Project: 218720