DU's official U.S. depository status dates back to 1909. However, many of the more than 700,000 documents found in the collection date from the 18th century. Currently, the Library selects 70% of available depository categories and receives an estimated 85% of unique titles distributed each year. Titles are distributed in paper, microfiche or electronic (CD-ROM or online) formats and are arranged according to the Superintendent of Documents classification numbering system (SuDoc). U.S. Documents are housed in several locations throughout the library. Frequently used documents and helpful reference items are housed in the Reference Area or the Reserve Desk.

New Resource: Now you can view our cataloged documents in shelf order according to the SuDocs classification system. Try it now!

Reference Assistance
Reference Librarians provide reference assistance, including documents assistance, at the Reference Desk during core hours of each day. You can also ask a reference question online (see Quick Links on the right side of this Web page).

Reference/Information Desk: 303.871.2905
E-mail: cbrown@du.edu