Papers relating to the Anglo-German Yola-Cross River Boundary Commission, Nigeria and Cameroon, 1907-1909, comprising bound typescript account of the work of the Commission between Yola and Kwosa, Aug 1908, with unsigned geological report on the Nigerian-Cameroon Boundary, Yola to Cross River, 1907-1909, written in [1909]; photographs, 1907-1909, bound with 'Two years on an Anglo-German boundary commission in West Africa', typescript by Downes, [1909] and 'Nigeria: delimitation of boundary between Yola and the Cross River, 1907-9', Command paper 5368, printed by HMSO in 1909. With the Nigerians in German East Africa (Methuen and Co, London, 1919), special edition bound with typescript copies of press reviews, 1919. Photographs relating to his service with 2 Royal Sussex Regt, Crete, 1906, bound with an account of his service, written in 1915. Photographs of Sinai, 1909-1911, mainly landscapes and people.