Letter book of J C W Berrett and other principles of the Edinburgh Press., 1931-1935., MS.23593. Letter books, correspondence and other records of the printing firm of T and A Constable, Edinburgh, together with records of the Edinburgh Press, which was amalgamated with the firm in 1936., MSS.23237-23617. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/56951 Accessed September 24, 2024.