Accounts and vouchers of transactions with the Oliphant family and the estate of Gask by Dr Joseph Robertson., 1796-1798., Adv.MS.82.6.1. Family and estate papers of the Oliphant family of Gask., Adv.MSS.82.1.1-82.9.16. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/17578 Accessed September 23, 2024.