XM2418/915
PRINTED BOOK: Brown’s Signalling - How to Learn the International Code and other forms of signalling as required at B.O.T. Examinations to which is appended the Allied Signal Manual by special arrangement with the Admiralty. Glasgow: brown, Son & Furguson Ltd., Nautical Publishers, 52-58 Darnley St. (Note on frontispiece that volume owned by W.C. Horbury Jr.)