Aerial Observation The airplane observer, the balloon observer and the Army Corps Pilot
New York: Harper and Brothers Publishers, 1921. Octavo, black cloth, xi, 356 pp., frontispiece, 16 plates. Rubbed at spine ends, slight tear in spine head cloth, bumps, hinge split, otherwise a good copy. Foreword by M. Georges Clémenceau. An account of the development of aerial observation and the training of..... More