Comprises:

'Morrison, G[eorge] R.', correspondence with Morrison, Kenya, author of Mixed Farming in East Africa (London: East Africa, 1935), and related papers, 1933-1945 and n.d. [c.1932-1960]

'Mortimer, Sir C[harles] E.', correspondence with Mortimer, Member of the Executive Council for Health and Local Government, Kenya, and related papers, 1939-1951

'Morton, G.A.', correspondence with Morton, Northern Rhodesia (later Zambia), contributor to East Africa and Rhodesia, and related papers, 1924-1926 and n.d. [c.1925]

'Movement for Colonial Freedom', correspondence and papers relating to the Movement, 1954-1967

'Mozambique Co[mpany]', correspondence with Vivien Libert Oury, Director, and Manager, London Committee of the Mozambique Company, and related papers, 1924-1944

'Mu'-'Mz', 1932-1967, including materials relating to Dr. W.B. Mumford of the Colonial Department, Institute of Education, University of London; Joseph Murumbi, Vice-President of Kenya; and Dr. Eri Mukasa K. Muwazi, Secretary-General of the Uganda National Congress