Collingborne's Book: illustrated left is an opening from a manuscript in the archives of the College of Arms which consists of a roll of Arms dating from the mid to late fifteenth century. The original roll may have had few names, and in many places these have been supplied in a later hand. Bound into the same volume as this roll is other interesting material, including Basynges' Book, a roll of Arms on vellum of circa 1395. The volume, which has the College reference B22, was given to the College of Arms together with a number of other important manuscripts in 1669 by Thomas Povey of Grays Inn, London, treasurer to James, Duke of York.

Grant of a Badge to Sir John Carre of Hart co. Durham: The White Lion Society has generously given the College of Arms one of the earliest surviving patents granting a livery badge. Purchased at the Morningthorpe Manor sale on 9 September 2016, it is the grant of a badge to Sir John Carre of Hart in the Bishopric of Durham made by Thomas Wriothesley, Garter King of Arms, and John Yonge, Norroy, dated 14 March 1515/16 and bearing their armorial seals. Described as a device or cognizance, the badge is the head of a cerf (hart), so a clear pun on Sir John Carre's place of residence. It is depicted on a standard, a tapering flag with the Cross of St George in the hoist.

The patent is known to have been in the possession of the Marquess of Bristol in the 20th century, and is presumed to have been inherited by his family through the marriage in 1688 of his ancestor John Hervey, Earl of Bristol, to Isabella, daughter of Sir Robert Carr, Bt., of Sleaford in Lincolnshire. However, the link between the Carrs of Sleaford and Sir John Carre of Hart has not been established with certainty.