Arthur Aaron Boss (1861-1955) was a soldier and stockbroker. His diary, dated 22 February - 29 June 1879, relates to the campaign against Chief Morosi, the taking of the mountain and death of the Chief which resulted in the decline of the Baphuti tribe. It is accompanied by a plan of the mountain, a typscript of the diary by Dr P.H. Butterfield (30 pages) and an article on the campaign in The Star, 29 June 1929. The original can be found in the Johannesburg Public Library.