The Associated Archives

One of the most significant collections of Catholic Church history in the U.S.

The Associated Archives at St. Mary’s Seminary & University opened in the spring of 2002. Located on the campus of the nation’s first Roman Catholic seminary, this program brings together the archives of the Archdiocese of Baltimore (est. 1789), St. Mary’s Seminary & University (est. 1791), and the Associated Sulpicians of the United States (U.S. Province est. 1903), making it one of the most significant repositories for records relating to the early history of the Catholic Church in the United States.

A state-of the-art-facility was built to house the three archives. We offer researchers a spacious reading room in a climate-controlled (i.e., cool) environment that has a reference library and a digital microfilm reader/printer. Qualified researchers are able to access the collections through the existing card catalog system and typed finding aids. Please see our Collections page to learn about the open collections in each of the three archives. Our Visitor Policy and information on scheduling an appointment, hours and upcoming closings, directions and parking, and local accommodations can be found on the About the Archives page.

If you are interested in learning more about the genealogical and reference services we provide, please see the Genealogy and/or Reference & Research pages where you will find electronic versions of our policies and request forms together with other helpful information. Please note that we do not take requests over the phone. We require that all requests be submitted in writing (letter or e-mail) or by using one of our forms.

The Associated Archives collects records that have permanent, historical, and enduring value from the approved offices and departments of our three sponsoring institutions. To arrange for the transfer of records to the archives, please consult the Records Transfer page. Staff is also available for consultation.

About the Archives

Click here for more information about hours and visitor policies.

Read More


This section was created to provide researchers with a brief description of the open collections in the archives of the Archdiocese of Baltimore, St. Mary's Seminary & University, and the Associated Sulpicians of the United States.

Read More


The Associated Archives at St. Mary’s Seminary & University has developed a genealogical policy responsive to individuals researching their Catholic roots.

Read More

Reference and Research Services

The reference and research services offered by the Associated Archives are designed to accommodate requests for access to information found in our holdings while ensuring the long-term preservation of the collections and protecting the privacy of its individuals.

Read More

Records Transfer

An archives is the official repository of an institution’s records and serves as the collective memory of that institution. For this reason, only records that have permanent and historic value should be transferred to the archives.

Read More