1985 Chris Birkett letter to Mary Thornton 4th December 1985 re the origins of the Prefects' Charge and Helen Holmes, the silversmith who created the item.

1959 Iain Thornton letter to Helen Holmes 28th December 1959 re his being the first recipient of "The Good Citizen Prize" for which the shield was originally awarded. Iain was Head of the Boarders.

1986 Iain Thornton letter to Mark Henning 13th January 1986 re the donation of the documents pertaining to the Prefects' Charge and Helen Holmes, the silversmith who created the item.