The fonds consists of newspaper clippings about his life (1912-1955); his articles and reports on the Peace River country and the fur trade; photographs of the north, natives and Cornwall; and miscellaneous personal papers. Includes Fort Resolution post diaries (1861-1862, 1880-1883), profit statements and list of goods (1881).

The fonds consists of photocopies of: William's correspondence (1863-1893), HBC records (1886-1892), land documents, financial records (1864-1912) and reminiscences (1911); Harriet's diaries (1889-1893); and Walter's correspondence (1866-1914). Includes two recorded interviews with Mary Traill (1970s) and extensive family photographs.