Fifty years of travel by land, water, and air
- publisher: London : T. F. Unwin
- creator: Butler, Frank Hedges, 1855-1928
- Keyword: Voyages and travels Aeronautics Balloon ascensions World War, 1914-1918 Personal narratives
- years: 1920.
- pages: 421 p. :
- class: G463
- download: pdf file