Factors' and particular accounts for the 5th and 6th Marquesses of Tweeddale and Major William Hay., 1720-1786., MSS.14675-14677. Papers of the Hays of Yester formerly preserved at Yester House., MSS.14401-14827. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/36401 Accessed September 23, 2024.