Title: United Air Service
Subtitle: hearings before the United States House Committee on Military Affairs, Subcommittee on Aviation, Sixty-Sixth Congress, second session, on Dec. 4, 5, 8-13, 15, 20, 1919, Feb. 3, 9, 12, 13, 1920
Subjects: Aeronautics, Law and legislation, Government policy
Places: United States