[Eric Mackay, 7th] Lord Reay [(1773-1847)], St James Place, London, to D. Robertson, Golden Square, May 26, 1831, Box: 1, Folder: 56. Spottiswoode & Robertson collection, MS 186. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/248851 Accessed March 02, 2025.