Woodhouse, Henry. The Conquest of the Air. The Mentor (Magazine), April 1, 1914. 12pp, 7x10", illus with six full-size photo card inserts: 1908 Gordon-Bennett Balloon Race, Zeppelin over Germany, French Aerial Scout, Curtiss Flying Boat, Moisant circling Statue of Liberty, and the First Powered Flight - Wright Brothers. Good, cover spine split.