The Marconigraph (a Short History of Wireless Telegraphy), circa 1907; Marconi Wireless Telepgraphy (3 copies), n.d., circa 1908; Marconi School Wireless Communication, Chelmsford, circa 1925; British School of Telepgraphy, Roll of Honour; Handbook of Technical Instruction for Wireless Telegraphists (Hawkhean and Dowsett), 1915 (a lot)