This collection contains papers pertaining to Leroy Charles Heinse's experiences at Pass Christian training school in Mississippi, and as a United States Merchant Marine during World War II, and as an injured veteran after the Mustard Gas bombings of the SS John Bascom. The papers include photographs, letters, short stories, drawings, certificates, mustard gas information, medical documents, information about Merchant Marine Veterans, newspapers, military documents, photographs of medals, booklets, foreign money, Merchant Marine songs, magazines, and official logbooks from the SS John Bascom.