[Eric Mackay, 7th] Lord Reay [(1773-1847)], St James Place, London, to D. Robertson, Golden Square, Friday June 26, 1829, Box: 1, Folder: 55. Spottiswoode & Robertson collection, MS 186. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/248850 Accessed March 02, 2025.