The John K. Mullen of Denver Memorial Library is the main library of the Catholic University of America. It stocks a range of books, magazines, downloadable digital contents, CDs, DVDs, research tools and commercial databases. It organizes art exhibitions, summer reading programs, concerts, lectures and other events. The library offers a range of membership packages and online and telephonic renewal services. Additionally, it offers transportation, delivery and door-to-door book exchange services for homebound individuals. The library organizes facility tours, orientation sessions and instructional workshops that focus on utilizing library catalogs, article databases, government information, bibliographic management software and Web sites for research purposes. The John K. Mullen of Denver Memorial Library is located in Washington, D.C.