I. 1604-1825: pt. 1. Catholic people and Catholic priests in colonial New England, by J. E. Sexton. pt. 2. The organized Catholic church in Boston from its beginnings to the end of Bishop Cheverus' reign, by J. E. Sexton.
II. 1825-1866: pt. 3. The diocese under Bishop Benedict Joseph Fenwick, S. J. (1825-1846) by R. H. Lord. pt. 4. The diocese under Bishop John Bernard Fitpatrick (1846-1866) by E. T. Harrington.
III. 1866-1943: pt. 5. The archdiocese of Boston under the Most Reverend John Joseph Williams (1866-1907) by R. H. Lord. pt. 6. The archdiocese of Boston under His Eminence William cardinal O'Connell (1907-1943) by R. H. Lord.