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 1820-1848 are copied out in full and a note of receipt is made for the financial and printed papers. Each volume has an alphabetical index of missionaries and some subjects.

Journals of Rev H C L Kruckeberg, John MacLeod, Rev W Bowley, Rev J C G Knorpp, Rev W Smith, Rev C B Leupolt, Rev J J Weitbrecht and David Shakoor. All relate their experiences teaching and preaching in the mission. Included also are: minutes of the Calcutta Corresponding Committee and reports on the missions; annual report of the mission at Burdwan for 1833-1834 written by Rev J J Weitbrecht; a list of students at Benares School.