Reay, Henry Utrick, A Short Treatise on the useful invention called The Sportsman’s Friend or The Farmer’s Footman, by a Gentleman Farmer of Northumberland. With figures of the instrument and its use, engraved in wood, by Thomas Bewick, from the paintings of Joseph Atkinson, cattle-painter in Newcastle; dedicated, with submission, to that highly respected body, the Board of Agriculture of Great-Britain, 1801, Volume: 123. Lord Eldon Manuscript Collection, MSS-056. Manuscripts. https://aspace.ll.georgetown.edu/public/repositories/3/archival_objects/31028 Accessed April 20, 2025.