May 21, 1814. The Foreign Mission Society, a precursor to today’s Board of International Ministries was founded in Philadelphia following the Triennial Convention (see May 18). ABHS is the official repository of the archives of the foreign mission societies and IM. It contains correspondence between missionaries in places like Congo, Burma and India and the sending agencies. There are also Property Files which have the history of the property owned at one time by the Foreign Mission Societies.