The papers include: diaries of William McGregor Ross, 1890-1939 summary of significant events in the diaries, 1890-1939, compiled by Sylvia R. Ross typescript autobiography, The Memoirs of William McGregor Ross and Isabel Ross, by Isabel Ross, based partly on the diaries, 1958-1962 correspondence of William McGregor Ross and…

Letters from William McGregor Ross to his parents, 1900-1917; correspondence and papers relating to William McGregor Ross's work in the Public Works Department, 1901-1922; personal correspondence and papers of William McGregor and Isabel Ross, 1899-1952; photographs and related papers, [c1894-1931].

Reports and correspondence of and relating to the Public works Department, and other correspondence of William McGregor Ross, 1905-1939; report on the Tana River, Kenya, etc., 1909; draft manuscript of Kenya from within: a short political history by William McGregor Ross (London, Allen & Unwin, 1927); miscellaneous papers, 1900-1935; miscellaneous published reports and papers, including reports on the Uganda Railway, 1899-1929.