List of maps, undated, apparently by Sir Thomas L Mitchell., [First half of 19th century]., Adv.MS.46.9.21. Correspondence and papers of General Sir George Murray., Adv.MSS.46.1.1-46.10.2. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/16577 Accessed September 23, 2024.