Various inventories of the Arbuthnott muniments, 18th c - 19th c, including a 2 volume inventory made by George Hume in 1822, together with deeds described therein, 13th c - 19th c (bundles have been disturbed since Hume's listing, and arrangement and numbering is frequently at odds with his inventory); several genealogies of the Arbuthnott family, 16th c - 20th c; estate, household and personal accounts, 15th c - 20th c; extensive estate papers, including baron court papers, correspondence, accounts, valuations, rentals and tacks, early 15th - 20th c; legal papers, 15th c - 20th c, including marriage contracts, action between Lord Arbuthnott and the Laird of Dun, 1680 - 1682, and papers re. the roup and sale of Arbuthnott and Fordoun estates, 1920; papers relating to Arbuthnott House, including contract for its repair, 1754, proposed plans, 1839; papers relating to teinds, stipends and heritors, 17th c - 18th c; papers relating to Bervie fishings, 1587 - 1775, Haltoun fishery, 1817 - 1819, and Catterline harbour, n.d.; personal papers, including military commissions and related papers of John, Lord Arbuthnott, 1861 - 1920; sermons of Henry Davidson, 18th c; miscellaneous correspondence and other papers, relating to family, business and other matters, late 18th c - 20th c.
Much of the early correspondence is political in nature, and has in the past, been bound into 2 volumes. Examples of its contents include letter to the Laird of Arbuthnott from James, Earl of Arran, Governor of Scotland, stating that an English army was preparing to invade Scotland, and summoning Arbuthnott and his friends to Edinburgh on 13 Apr, with 40 days provisions, 13 Mar 1549/ 50; and letter to the Laird of Arbuthnott from James VI, summoning him to a meeting at Halyruidhous on 24 Nov to assist in putting sum spedie ordour to the reformation of sindre thinis that ar amiss bayth in religioun and politie , 14 Nov 1588.
Estate papers relate principally to the baronies of Arbuthnott and Fordoun, and to lands lying in the parishes of Ecclesgreig, Fordoun, Arbuthnott, Bervie, Garvoch and Glenbervie.