The fonds consists of correspondence, literary manuscripts (The Three Marys, When I was a Child, His Hour or Two, Mine Inheritance, Triumph, What's Past is Prologue, Family Album, The Staff at Stimsons, A Candle in the Rain, Tales of the Black Flag, Hands Up, Brothers in Arms, Under Which King, Island of Arran, The Transplanted, Once Upon a Time, The Garricks of Renfrew, Dead Men's Bells, The Flying Years, etc.), reviews of books, publication agreements, scrapbooks, newspaper clippings and family photograph albums. Includes Pauline's diaries (1947, 1959, 1961) and correspondence. Also includes material collected by Frederick for research purposes: ration ticket of Cree, Mechawayis of the Sweet Grass band (1885), and newspaper clippings about Sitting Bull, Sioux uprisings, etc. (1890s).

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.