Accounts between John Forbes and his agent James Hay and the factory account of Pitsligo., 1749-1766., Acc.13827/503. 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/107659 Accessed September 23, 2024.