The front cover of Hargrave's Evolution of the flying machine II, About 1889-1902.
About 1889-1902
Lawrence Hargrave: 'Evolution of the Flying Machine II' (1889-1902)
"As far back as 1884 I put thought and labour on the evolution of the flying machine", noted Lawrence Hargrave in a letter of 9 March 1906 addressed to President and Members of The Aeronautical Society of Great Britain. From 1884 onwards Hargrave read a series of papers on his aeronautical research…