Comprises:

'Colby, Sir Geoffrey', correspondence with Colby, Governor of Nyasaland (later Malawi), and related papers, 1947-1956

'Lady Eleanor Cole', correspondence with Lady Cole, Kenya representative on the British Red Cross Empire Committee, [later President of the East Africa Women's League], and related papers, 1930-1956

'Colonial Development Corporation', 1949-1951

'Colonial Office', correspondence relating to matters including the publication of the first issue of East Africa in 1924, Joelson's membership of the Advisory Committee of His Majesty's East African Dependencies' Trade and Information Office, and response to items appearing in East Africa and Rhodesia, 1920-1951 and n.d. [c.1924]

'H[enry] Hopkinson, Lord Colyton', papers relating to Hopkinson, Minister of State for Colonial Affairs 1952-1955, 1952-1963

'Commonwealth Institute', correspondence relating to matters including Joelson's role as a member of the Board of Governors of the Imperial [later Commonwealth] Institute, and related papers, 1933-1962

'Commonwealth Writers of Britain', lists of members and associates, 1962 and 1965