Beddows, D. 1969. Forest insect and disease survey, West Prince George, 1968. Pages 170-209 in J. Grant, D. Beddows, and D. G. Lund, Annual district reports, Forest Insect and Disease Survey, British Columbia. Canada Department of Fisheries and Forestry, Forestry Branch, Forest Research Laboratory, Victoria, British Columbia, Information Report BC-X-33(VII).