Aerial observation (Military science)--United States--History--20th century
World War, 1914-1918--Campaigns--Western Front
World War, 1914-1918--Aerial operations, American
War photographers--United States--Biography
Foreword: Taking the camera aloft -- War and exile -- A new life in the military -- Over there -- The world of air observation -- Taking charge -- Over the front -- War and photography -- Appendix: Life at the cutting edge: the photo sections.