Egan & Prindeville
Egan & Prindeville was an architectural firm active in Chicago, Illinois from 1897 to 1914, which gained prominence designing Roman Catholic structures, including the Cathedral of Cathedral of St. Paul (1906). The firm was founded by James J. Egan, FAIA, (1839—1914) and Charles Prindeville. Egan was formerly a partner of Armstrong & Egan and Egan & Kirkland before he entered into partnership with  The firm continued after Egan's death in 1914 under Charles Prindeville.
- St. Mary of the Assumption Cathedral in San Francisco, California (1891, destroyed by fire in 1962)
- Cathedral of St. Paul in Pittsburgh, Pennsylvania (1906), as Egan & Prindeville