Receipts for Fettercairn estate marked "Vouchers – Mackay’s acct". , 1860-1861., Acc.13827/765. Further papers of the Forbes and Stuart Forbes families of Fettercairn and Pitsligo, with papers of the Trefusis family relating to Fettercairn and Pitsligo., Acc.13827/1-1103. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/132275 Accessed September 24, 2024.