- 1G. Tilghman Richards; Science Museum London
Typewriters : a brief outline of the history and development of the correspondence typewriter with reference to the National Collection and descriptions of the exhibitions
London: His Majestys Stationery Office 1948; 56 S. : Ill.
Schreibmaschine; Geschichte; London / Science Museum - 2Diving manual 1910
London: His Majestys Stationery Office 1909; 83 S., XV Bl. : Ill.
Tauchen; Tauchgerät