Fonds consists of two series: I. Dan McCowan series; II. Mary E.(Fee) McCowan series. I. Dan McCowan series, ca.1905-1967?, ca.30 cm of textual records and ca.3400 photographs. Includes five sub-series: A. Correspondence; B. Writing; C. Photography; D. Professional activities; E. Ephemera. Correspondence includes incoming letters re writing, business and broadcasting. Writing is in the form of notes and notebooks, unpublished and published manuscripts, newspaper articles and other materials. Photography includes negatives, lantern slides, 35mm transparencies and prints. Material pertains to flora, fauna, people, places and scenery, also family, activities and events. Photographs of Banff personalities and visitors are available in negative and lantern slide form, 254 items. Lantern slides were designed for lectures such as: "On skyline trails in the Canadian Rockies"; "On nature trails at Banff and Lake Louise"; "A naturalist in the Canadian Rockies" (200 slides); "Snow peaks and flower meadows in the Canadian Rockies" (200 slides); "Over the hills and far away: a pictorial review of the Canadian Rockies"; "Victory Day, May 8th 1945, Dan McCowan presents: Bye-gone days in Banff" (exact titles were based on title slides). II. Mary E. (Fee) McCowan series consists of diaries, 1926-1957, photocopied from 12 volumes (19 cm), and letters from Dan McCowan, 1943. Diaries discuss joint travels, activities, lecture tours for CPR (Canada, US, UK), Banff, trail rides, skyline hikes, and Royal Visit, 1939.