There are 52 letters mostly written by Thomas to his father. They include letters from when Thomas was at Cambridge, in France, in London, and in Canton, Macao and Kolkata.

Notebook containing Chinese characters, their romanised spellings and their English translations. In some cases these seem to be arranged to work out translations of official documents between Chinese and British authorities. A black soft-cover notebook with lined pages, written in ink and pencil, but with no identifiers.