Letters from Bishops discussing a wide variety of topics including planned visits, ordinations, and questions of proper religious conduct. Included, in French, are several letters from French Bishops.

Letters to Bishops on the subject of the Congregation of Holy Cross. Many of the letters come from members of the order complaining about people and rules within the order, including letters asking permission to leave the order.

Letters from CSC brothers stationed in various areas, generally concerning educational institutions established in Texas and elsewhere. Issues raised include concern about the general rules of the Congregation of Holy Cross and the CSC approach to education. Progress reports of various institutions are included, as well as a dismal report on problems at Saint Mary's College in Texas.

Letters from Holy Cross priests, most of whom were apparently living in the Notre Dame House. Includes several letters of resignation. Other topics include complaints about living conditions and health problems.

Miscellaneous letters from Diocesan priests planning visits to Notre Dame or seeking the aid of the Congregation of Holy Cross for some purpose.

Letters from Father Edmund Kilroy (1831-1904), Notre Dame class of 1853 and later parish priest in Stratford, Ontario. Letters to Sorin appear to date from 1854-1855 and discuss Kilroy's "laborious" work as a missionary in Northern Indiana and Southern Michigan. Topics include the hardships of missionary life and problems in the German Church in Buffalo, NY.