This collection consists of a detailed calendar of correspondence between clergy in New Brunswick and the Society for the Propagation of the Gospel in Foreign Parts in London, 1821-1848. Most of the letters are written from New Brunswick, with a few replies from London. There is also a calendar of the letters from Archdeacon George Coster of Fredericton, 1829-1844. Both calendars include an index of the names appearing, biographical notes on the writers of the letters, and abstracts of the letters.
There are also 56 reels of microfilm containing other records related to New Brunswick, acquired from the Society, including an index, journals (1747-1860), and calendars (1702-1885)
Lastly, there are 7 reports of the Incorporated Society for the Propagation of the Gospel in Foreign Parts for the years 1845, 1847, 1848, 1861, 1877, 1878, and 1885. There are a few introductory pages missing from the 1885 report. These reports are in textual format.