Campus address: 601 University Drive NE
In 1901 CUA’s second Rector, Thomas Conaty, was well aware that the University needed a separate library building.
The John K. Mullen of Denver Library wasn’t built until the 1920s, when the namesake of the library donated the money for its construction. In fact, there were complications attached to this gift, and the library actually had to be completed in phases: the full basement and front and central portions of the library were completed and opened in 1928, while the side portions were completed in 1958.
The interior of the Mullen Library underwent a renovation from 2002 – 2004.