BIBLIOGRAPHY Mackenzie, Alexander 1927 Voyages from Montreal on the River St.Laurence through the Continent of North America to the Frozen and Pacific Oceans in the Years 1789 and 1793 with a Preliminary Account of the Rise, Progress, and Present State of the Fur Trade of that Country. Toronto. The Radisson Society of Canada. Pilon, Jean-Luc 1988 Report of the 1987 NOGAP Archaeological Field Activities in the Southwest Anderson Plain, District of Mackenzie, Northwest Territories. Manuscript No.2912, on file in the Archives of the Archaeological Survey of Canada, Canadian Museum of Civilization. Hull. 1989 Report of the 1988 NOGAP Archaeological Field Activities in the Southwest Anderson Plain and in the Mackenzie Valley, District of Mackenzie, Northwest Territories. Manuscript No.3039, on file in the Archives of the Archaeological Survey of Canada, Canadian Museum of Civilization. Hull. 1990 Vihtr'itshik: A Stone Quarry Reported by Alexander Mackenzie on the Lower Mackenzie River in 1789. Arctic 43(3): 251-261.