Volume entitled: "Early Days of the Electrical Industry, and Other Reminiscences of Alexander P. Trotter"
Collection of notebooks for traditional 'A' level physics course at Queen Elizabeth's Grammar School, Gainsborough
Bound manuscript translation entitled: "The Evolution & Future of Large Sailing Ships" by Professor W. Laas; translated by James Hayes
Kompleks kompensator, system Gall. Fabrikat H. Tinsley & Co., London. Betjeningsforskrift og beskrivelse
Collection of archive documents and photographs relating to the work of Charles Eric Strong at Standard Telephones and Cables Ltd.