The fonds includes one diary, with entries made sporadically between 1938 and 1952. Entries relate to family, to the work of mink farming, and to weather and wildlife.

Also included are 24 photographic postcards, most attributed to E.C. Everett of Nipigon. Images are primarily of scenery and life in the Nipigon region.

Arthur Ellsworth "Elza" Swaim (1881-1953) was CNR section foreman in Larson, Ontario, where he also established and earned renown for a large mink ranch. He lived in Larson with his wife Josephine "Josie."