DO NOT, under any circumstances, leave laptop computers or any valuables unattended in the Libraries. The Libraries are NOT responsible for lost or stolen laptops, personal computers, their components, or any other items.
Levels:
Restrooms:
The St. Louis Mercantile Library is located on Levels 2 and 1 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.)
Two entrances, Service Desk (research help and book circulation), new print books and best-sellers, 3 printers, microform reader, 6 individual study rooms, 7 medium study rooms, 5 large study rooms, open study spaces, gendered and gender-neutral restrooms

St. Louis Mercantile Library and the Wallace H. Smith Gallery of Art, reference materials, COM2 South (compact shelving, which includes catalog location codes COM2 South, COM2 South PER, COM2 South MISC, Oversize, Folio, Curriculum, and Books E), children’s books (juvenile collection), University Archives, State Historical Society of Missouri–St. Louis Research Center, tables

Books A–D and F, additional Mercantile exhibits, carrels and tables.

Books G–QC, carrels and tables for silent study.

Library classroom, books QD–Z, bound periodicals, microform, library staff offices
