This field book contains notes on specimen observed and collected between approximately 6 August 1859 and 5 February 1861 in Washington State near the 49th parallel and possibly in Canada. Specimen number range is approximately 1-135 (some numbers are not in order). A wide variety of specimen were collected including mammals, birds, fish, and reptiles, although the bulk of specimen are mammals and birds. Frequently listed animals include snakes, mice, rats, squirrels, grouse, goats, and trout. Descriptions range from brief two line entries, to paragraph descriptions including measurements of various body parts, preservation method, sex, and additional location information. Locations include Skagit River, Colville Valley, and Whatcom Trail. Other locations may also be included.