Wireless set no. 19 (Canadian) : installation instructions fot truck and ground station / Publ. by the director communications and electrical design, M.G.O. Branch, department … pamphlet Directions for the use of artillery instruments : Directors, Nos. 6A and 7 to 7 B Working instructions (Canadian) : Wireless sets no. 19 : mark II, as manufactured in Canada and the U.S.A. / published by the director of signals … Coast artillery drills. Vol. I : Director no. 10
