Receipt to Messrs. Blackwood in respect of his expenses in the Chancery suit concerning Billings., 1860, MS.30012, folio 199. 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/29123 Accessed September 23, 2024.