Lieutenant-Colonel Fleming Mackenzie of the 1st Battalion of the Fifteenth Punjab Regiment commanded the Escort to the Trade Agent in Tibet in 1938-1939. This material contains original diaries written whilst in Tibet, later typed drafts of these diaries, essays written about his experiences, hand-drawn maps and other material associated with his visit.

A small notebook containing diary entries from 8 August - 15 November 1938. The entries are often illustrated with sketches. At the beginning of the book are also lists of departures and arrivals for August 1938, contents of his boxes, distances and altitudes of places visited, and rates charged for helpers and ponies. Interspersed with the last few diary entries are further lists and notes: Phari etc. Prices, Gangtok Nov. 1938 activities; recoverable expenses for various stages of the journey; further lists of expenses; a newspaper cutting for 'butterflies for cash'; sketch of a Tibetan man in a hat and carrying a knife; boxes in Alipore; and an address for Elizabeth, c/o Madame Pradon-Vallency. Inserted into the diary is a postcard of Babbacombe Beach, Devon, from Jean to Fleming Mackenzie, dated 24 April 1978, giving holiday news.

Small notebook containing diary entries from 16 November 1938 - 21 February 1939. The entry for 21 December 1938 includes a sketch of an ice boat. The diary also includes a typed list of Germans who arrived at their camp on 8 January 1939 and a description of them within that day's diary entry. The entries contain both official and personal information.

Handwritten draft giving background to the Escorts in Tibet and giving journal entries from 16 August 1938 to 27 March 1939. These entries are not exact replicas of the diary entries. The draft is 86 handwritten sheets which are annotated and edited. There are three labels with this draft, one of which is dated 26 May 1978.