“Notes in connexion with twelve Autograph Letters by Major-General James Wolfe, who fell at the Capture of Quebec on 13th September 1759, addressed to Captain, afterwards Lieut.-Colonel William Rickson, Quarter-master General of North Britain” (1863) Proceedings of the Society of Antiquaries of Scotland, 4, pp. 455–459. doi:10.9750/PSAS.004.455.459.