Copy of acknowledgement of payment from William Blackwood and Sons for editing and contributing to `The Book of the Farm` with assignation of copyright of his contribution in it to Leonard Scott and Co., 1851, MS.30009, folios 256-257. 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/28867 Accessed September 23, 2024.