Much of the content of ruleshistory.com has come from, or been confirmed by, the following:

R&A and USGA Rules of Golf booklets 1902-2019

Francis, Richard 1939 Golf, Its Rules and Decisions MacMillan

Browning, Robert 1955 A History of Golf J M Dent

Campbell, Malcolm 2001 The Scottish Golf Book Lomond Books

Clark, Robert 1875 and 1893 Golf: A Royal and Ancient Game 1893 edition EP Publishing

Cameron, Robbie J 1936 Chronicle of Royal Burgess Golfing Society of Edinburgh Morrison & Gibb

Cruden, Stewart 1992 Bruntsfield Links Golfing Society BLGS and John Donald Publishers

Geddes, Olive 1992 A Swing Through Time Golf in Scotland 1457–1743 HMSO

Hamilton, David 1998 Golf Scotland’s Game The Patrick Press

Darwin, Bernard, Gardiner-Hill, Harold, et al 1952 History of Golf in Britain Cassell&Co

Chapman, Ken 1997 Rules of the Green Virgin Press