Recherche dans la collection - Rideau Canal. Plan showing in green coloring land required for service of the canal at Poonamalie Lock Station...(signed) Josias Richey, Provincial Surveyor, Smith's Falls, 30th January, 1850. Royal Engineering Office, Bytown, 24th January, 1851. (signed) Charles E. Ford, Capt. Rl. Engineers. (signed) F. W. Whingates, Lt. Col. Commg. R. Engineers, 17th Sept., 1851. Copied by (sgd.) H. Williams, Lt. Royal Engrs., 17th September, 1853. (Sgd.) Fred. W. King, Lt. Rl. Engineers, 23rd January, 1857. Examined (Sgd.) C.W. [cartographic material]