Account, 1864-5, with Horne and Rose concerning the executry of Charles Blackwood., 1865, MS.30014, folios 232-233. Papers of William Blackwood and Sons., MSS.30001-30984. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/29352 Accessed September 23, 2024.