That book of yours belonged to a cadet who was studying at the No. 4 School of Aeronautics at the University of Toronto. During WWI they taught courses in engine maintenance, aerial photography, map reading, telegraphy, and such, after which the cadets were sent on for flight training elsewhere. The fellow's service number is just below his name so you could find out more about him from the war records most likely.
I have a copy of that book myself, also from a former student and most likely from the same school. It's a good techincal source to have in your WWI aviation library.
Three RFC Brass Hats were strolling down a street in London. Two walked into a bar, the third one ducked.
Former Cold War Warrior, USAF Security Service 1974-1978, E-4, Morse Systems Intercept, England, Europe, and points above."pippy-pahpah-pippy pah-pip-pah"