Architectural plan, elevation and section of alterations to dwelling house at Butterhole. Parish of Carluke., [Late 19th century.], MS.27704. Maps and plans from the papers of the family Lockhart of Lee and Carnwath., MSS.27638-27847. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/7590 Accessed September 23, 2024.