Correspondence, etc. relating to cadetship in Nigeria, 1929-1950 Diaries and Colonial Office letters concerning period of office in Palestine, 1935-1940 Letters written by Blackburne and his wife to his parents and her mother, 1935-1941, 1943-1946, 1950-1956 Correspondence and a report relating to period of office in the Gambia, 1941-1943 …

Travel diaries, correspondence, drafts for a history of the Colonial Forestry Service, memoranda etc. relating to work in the Colonial Forestry Service, and as director of the Commonwealth Forestry Bureau, in Trinidad, British Guiana, Canada, Sudan, Australia, Jamaica, America, Fiji, Solomon Islands, North Borneo and the West Indies, with two memoirs on colonial service, 1928-1971.

Papers concerning stay in Jamaica with Lord and Lady Olivier in 1931, with related material on Lord Olivier.