The Mission Books contain hand written copies of the Original Papers sent by the missionaries to the Secretary in London. The papers are numbered in the order they arrived in London. The letters and journals from 1844–May 1849 are copied out in full and a note of receipt is made for the financial and printed papers. From 1849 onwards the letters only are copied. Annual Letters are not copied out but those from 1875 onwards are printed at the back of the volumes. Each volume contains a name index.

Rev J Innes to Rev H Venn enclosing documents; minutes of the Calcutta Corresponding Committee with information on the missions; notes on the Solo Mission by Rev G G Cuthbert, February 1847; a note on the expenditure of the Simla mission, October 1846-September 1848; minutes of a meeting of Bengal missionaries, October 1847; report by Mr A Acheson to Rev H Venn, January 1848 on the orphan boys rescued during the great famine with statistics showing their educational proficiency; meeting of the missionaries of the Agra District, 3 January 1848.