Letter book of T and A Constable containing carbon copies of outgoing letters of the firm to Messrs Rivington, London., 1929-1945., MSS.23489-23493. 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/56831 Accessed September 23, 2024.