Autograph Letter Signed to Sir H[enry]. T[rueman]. Wood, Secretary, Royal Society of Arts.

Inventor and engineer (1870-1923), whose papers are held by the Royal Society. During the war Harker was in the Inventions Department of the Ministry of Munitions. One page, 12mo. Good, if slightly grubby. Docketed in pencil and bearing the Society's stamp. Reads 'I send herewith a short contribution to the discussion of Dr Flemings paper at which I was present but in which on account of lack of time I did not feel it desirable to take part verbally.' Signed 'J. A. Harker'.