Correspondence of Richard Burdon Haldane and his mother, Mary Elizabeth Haldane., 1866-1928, undated., MSS.5927-6009. Correspondence and papers of Richard Burdon Haldane, Viscount Haldane of Cloan (1856-1928), the statesman, lawyer and philosopher, and of his sister, Elizabeth Sanderson Haldane (1862-1937), philanthropist and author., MSS.5901-6109. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/35161 Accessed September 25, 2024.