G.S.G.S. (Canada. Department of National Defence. Geographical Section) ; no. 130. "Geographical Section, General Staff, Department of National Defence 1917. Revised and reprinted 1935." "Modified British grid system, Maritime zone." Stamped in black, "H. B. Stuart Collection"; stamped in pink, "H. B. Stuart". Title, scale, date, and H.B. Stuart signature written in ink in lower, right margin. Some pencil notes in lower margin.