Copy of letter probably of John Alexander to Stevenson and Co., concerning building works on their Printing Office with copy of their reply to him., 1846, MS.30010, folios 314-315. 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/28961 Accessed September 23, 2024.