Correspondence concerning propaganda for Ayr., Summer 1926., Acc.3721/181/10. Papers and correspondence of the Scottish Secretariat, and of Roland Eugene Muirhead., Acc.3721/1-263. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/85423 Accessed September 23, 2024.