Collection search - Quebec... Copied from "Survey Plan" No. 846 prepared by Chas Wlkem, S. & D. in 1846 && Allson Walker, Sruveyor & Draftsman, Rl Eng Dept. F.W. Whinyates Lt. Col. C.R. Engineer, 6 Nov. 1851. Head Qr Royal Engineer Office, Montreal. [cartographic material]