The St. Louis Mercantile Library is located on Level 1 and Level 2 of the Thomas Jefferson Library. The University Archives are also currently handled by the Mercantile Library staff.
The State Historical Society of Missouri - Saint Louis Research Center is located on Level 2 of the Thomas Jefferson Library.
Note: The Ward E. Barnes Library was merged into the Thomas Jefferson Library in May 2014.
Books A - F, COM1, Additional Mercantile exhibits, Carrels and Tables
Entrance, Public Service Desk (Reference & Circulation),Café TJ, Research Commons/Computer Lab, Copier & Scanner, Instruction Room (Room 315), Study Tables
Books G - QC, Silent Study Area (with Tables and Carrels)
Books QD - Z, Periodicals, Microform, Study Rooms, Curriculum & Children's Books, Scanner, Tables.