The Washington University Libraries are a powerful network of academic resources featuring 12 libraries (10 on the Danforth Campus, one at West Campus, one at the Medical School); vast print and electronic collections; and expert librarians whose first priority is helping students and faculty find the information they need.

The center of this rich network is John M. Olin Library, a 197,000-square-foot research library housing humanities, social sciences, engineering, and special collections; and extended-hours study space; reading rooms; lounges; and small-group studies. The other libraries house collections serving specific departments or schools. See the Library Guide for more information.

To schedule an Olin Library orientation or tour, contact Rudolph Clay at (314) 935-5059. For self-guided tours, come to the Help Desk for a guide or use this mobile-friendly tour of Olin Library. For departmental or school libraries, contact each library directly.


The University’s original library, located in Ridgley Hall, was built in 1907. By 1946, the University Library owned 46,000 volumes and consisted of 14 school and departmental libraries in addition to Ridgley. The larger and modern Olin Library opened in 1962 and was renovated in 2004. In spring 2018, the Olin Library Transformation project will be complete with new spaces and resources for learning, research, and teaching.

Newer library facilities include the Kenneth and Nancy Kranzberg Art & Architecture Library, which opened in 2006 and serves art, architecture, art history, and archaeology. The Ronald Rettner Earth & Planetary Sciences Library opened in 2005.