Account of trials made for coal on the Dundas estate, 1719-1721, 1727-1728 (folio 1); and notes of measurements taken on the Dundas estate, early 18th century (folio 1 inverted)., Early 18th century., Adv.MS.80.4.2. Papers of the family of Dundas of Dundas., Adv.MSS.80.1.1-80.7.14. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/16959 Accessed September 23, 2024.