Buxton Papers. Transcripts of telegrams from Walter Hume Long, 1st Viscount Long, as Secretary of State for the Colonies, to Sydney Buxton; 1917-1919. Correspondence between Buxton and Long, 1916-1919, is held by the Wiltshire and Swindon History Centre.
Buxton Papers. ‘The Governor-Generalship’, March-Aug. 1920. Material relating to the successor to Sydney Buxton as Governor-General of the Union of South Africa.
Buxton Papers. Letters to Sydney Buxton from his daughters; 1907-1922, n.d. 1. From Phyllis Buxton afterwards Ponsonby; 1910-1922, n.d. 2. From Doreen Buxton afterwards Fitzroy; 1907-1918, n.d.