Otto Lilienthal. This is the work of the creative genius who inspired the Wright Brothers to investigate the problem of human flight. Lilienthal's observation, analysis, ingenuity and daring enabled him to build a series of gliders in which, from 1891 to 1896, he made over 2,000 glides - bridging the gap between those who dreamed of flying and those who flew. This is an unabridged facsimile of the original edition first published in 1889. 175 pgs., 6"x 9", sfbd. #0005416