USS Mount Vernon ID-4508, date and location unknown.

September 1918: USS Mount Vernon ID-4508 in dry dock at Brest, France undergoing repairs after being hit by a torpedo fired by U-82 on September 5, 1918. The explosion killed 36 of the crew.

February 7, 1919: USS Mount Vernon ID-4508 seen at Boston, Massachusetts.

January 2, 1920: USAT Mount Vernon with USS Comfort AH-3 seen at Mare Island Naval Shipyard, California.

January 2, 1920: USAT Mount Vernon seen at Mare Island Naval Shipyard, California.