235 Certificate of Merit from the Alford Agricultural Labourers' Society ... for the encouragement of deserving labourers and servants.
445 Printed advertisement entitled: "A Remarkable Opportunity for Amateur Astronomers. Sale of Mr. With's choicest reserves of silvered glass specula for Newtonian telescopes"
7 sheets with 12 manuscript pages Description of, and plans for, proposed ventilating arrangements for ship 'Immortalite'
105 Portrait photograph of Professor John Hopkinson, Professor Wilson and senior students at King's College, London
No scale. Two bear manuscript annotations; all three bear, in pencil, 'Opt. Compass'. Technical drawings of 'optical compass' used by Boys when repeating the 'Cavendish experiment'
A collection of glass lantern slides capturing the development of flight from an early set of images from the 1909 aviation meeting held at Reims, France through to images of aircraft from Imperial Airways and flying boats in the late Thirties. The History of Aircraft and Flying
3 items Original sketches of the apparatus used by C. Vernon Boys in his repetition of the "Cavendish Experiment"
35 pages and 6 drawings Description of Pumping, Flooding, and Drainage Arrangement of cruiser 'Mildura', and associated drawings