Records of the Windham Club, consisting of:
- Minute books, 1849-1954
- Agenda for meetings of the general committee and house sub-committee, 1874-1917
- Minutes of general meetings and of committee meetings, 1869-1945
- Minutes of house committee meetings, 1874-1940
- Book of the rules of the club, 19th century
- Rules and bye-laws of the Windham Club, 13 St. James's Square. September, 1944 [n.p., 1944], with The Marlborough-Windham Club. Rules and list of members, 1947