Letter from Abraham Dee Bartlett to David William Mitchell regarding the weight of the flesh, bones, skin and organs of an elephant

Letters from Frederic Brine to Philip Lutley Sclater regarding the living conditions of a gorilla, a sacred white elephant which was said to have been in Siam but which he refuted, and the height and weight of Jumbo and Jenny

Correspondence between Sir William Gowers and Geoffrey Marr Vevers regarding A J Ferrier who wrote the book 'Elephants in Burma', and a question on the weight of an elephant before death