The Congregation of the Mission in the United States: An Historical Survey – By John Rybolt, C.M., Director of International Center for Formation (Paris)
1. Roman Mission, 1815-1835
2. One Province, 1835-1888
3. Two Provinces, 1888-1975
4. Five Provinces, 1975
http://www.famvin.org/cm/curia/vincentiana/2001/2001-3-rybolt.html