The fonds consists of photographs of Lethbridge buildings, businesses, institutions, personalities, events including the Lethbridge Fair, and industries including the Galt Coal Mine. Also consists of photographs of the Canadian Pacific Railway (CPR) viaduct at Lethbridge, agriculture and irrigatrion in the Lethbridge area, and nearby communities including Diamond City, Monarch, New Dayton, Warner and the Crowsnest Pass.

The fonds consists of reminiscences and articles (predominantly written by Fred) regarding the NWMP, Fort Macleod pioneers, and Blood and Blackfoot (Siksika) peoples (1930s-1950s); correspondence with newspapers regarding submitted articles (1930s-1950s); ground plan of Fort Macleod in 1880; genealogical notes; photocopies of scrapbooks; and newsclippings. Also consists of photocopies of detachment diaries from NWMP detachments at Grenfell (1906-1908) and Pincher Creek (1908-1909); and APP detachments at Lac La Biche (1917-1923), Wainwright (1923-1927), Stony Plain (1927-1930) and Athabasca (1930-1932). Includes photographs of NWMP, APP, Fort Macleod and native people (1874-1950s).

The fonds consists of personal correspondence and speeches; and minutes, reports, correspondence and circulars of organizations in which he was actively involved.

The fonds consists of Nevitt's detailed letters to Elizabeth Beaty, photographs of his sketches of NWMP activities and native peoples, a newspaper clipping about his march west with the NWMP, and a menu for Christmas dinner at Fort Macleod.