This collection contains 16 boxes of records including correspondence, financial records, prayers and homilies, records of meetings and membership, retreat records, scrapbooks and photographs of retreat participants. A large collection of clippings relating to the Catholic Church, and the diocese of Worcester has been discarded. Biographical information about Holy Cross College alumni has been filed in the alumni biographical files in the College Archives.

The collection contains the personal records of Rev. John J. McCoy and includes his personal writings and speeches along with administrative record books and reports concerning the various parishes at which he worked. Additionally, there are records for Catholic schools in western and central Massachusetts and scrapbooks with newspaper clipping documenting Rev. McCoy, his parishes and reports on Catholic groups around the United States. Materials in the collection date from 1877 to 1932.