| description: | Professor S.P. Langley'S Aeroplane. Langley'S Experiments In Flying Are Part Of American History. On Dec. 8, 1903 His Steam Powered Aerodrome Took Off From The Roof Of A Houseboat Floating In The Potomac River. The Machine Gathered Speed On Its Short Tracks, Reached Their End And Plunged Into The River In The Presence Of Celebrities And Sightseers" |