Memorandum, 9 Feb. 1839, by 'H. Buck, BA, Trin. Coll. Cam.' certifying that the ruler and part of the compasses once belonging to him by Isaac Newton by Aldous Henshaw, Librarian of Trinity, were delivered to him, and 'correspond in every respect with the remaining instruments of the same kind preserved in the Library of the s[ai]d College'. With label pasted to sheet: 'Part of the Compasses & a rules that formerly belonged to Sir Isaac Newton | The remainder of this set of Inst[rumen]ts was presented to the Library of Trinity Coll. Cambridge'.
Letter, 29 Jul. 1941, from Evelyn E. Fellows, acting for the administrators of the estate of the late Frances Pulteney of Sion House, Birchanger, among whose possessions was found 'this case' [containing the compasses?].