The correspondence, by laws, and minutes of meetings under the BCIM's fourth Executive Director, Monsignor William M. Hughes, is divided into annual increments, which are further divided into five numerically-designated funding categories described below. Within them, the arrangement is first alphabetical by state and there under by localities and missions or schools with "general correspondence" pertaining to two or more missions or schools following at the end. The localities include both individual places and institutions and widely dispersed or sparsely settled areas in clusters comprised of several institutions not listed on the folder headings, e.g. "Arizona Territory, Pima Agency," "New Mexico, Pueblo Reservation."
These records contain extensive and diverse historical narratives about Native Americans and their communities, and especially Native American Catholics and their Catholic parishes and events. Also detailed are the Catholic missionaries and their evangelization through parishes, schools, and special events. These accounts are especially valuable whenever related historical records have not survived elsewhere.
The names of Catholic institutions with their corresponding place names are used throughout the descriptive inventories according to the names current at that time. Be aware that a number of institution and place names changed over time and that more than one name may have been used simultaneously. For examples, St. John's Mission School on the Gila River Reservation in Arizona was known first as St. John's Mission, Komatke, Arizona and later as St. John's Mission, Laveen, Arizona and the Holy Rosary Mission School near Pine Ridge on the Pine Ridge Reservation in South Dakota is now known as Red Cloud Indian School.
Additions and Special Compilations, 1873-1990: BCIM correspondence from the Stephan (1885-1900), Ketcham (1901-1920), Hughes (1921-1935), Tennelly (1936-1976), and Lenz (1977-1990) administrations acquired after 2000, which has been neither microfilmed nor interfiled within those respective records. Rather, these additions have been maintained separately and cross-referenced with their respective holdings.
Reformatted records: The microfilm version of the Series 1-1 Correspondence is available via interlibrary loan within the United States; please follow the Guidelines for Interlibrary Loans.