Pt. 1. Minute books of the RBMU, 1903-1955
Pt. 2. Correspondence and reports of the RBMU - the Congo Mission, 1888-1955
Pt. 3. Correspondence and reports of the RBMU - Peru, Argentina, India, Nepal, Kalimintan and Irian Jaya, 1893-1955
Pt. 4. Regions Beyond, 1878-1981, and Horizons, 1981-1990
Pt. 5. Correspondence and reports of the RBMU - all regions, c.1955-1990.