Effective July 26, 2021 -
In alignment with public health guidelines, the University of Missouri–St. Louis, including the St. Louis Mercantile Library and Thomas Jefferson Library, will require all faculty, staff, students and visitors age five and older to wear a face mask when entering or occupying a physical building or facility owned, operated or managed by the university regardless of vaccination status. Additionally, face coverings are required when utilizing campus shuttles. Wearing face masks outdoors, especially in group settings, will be strongly encouraged.See additional information regarding the Coronavirus Response and Updated Policies at UMSL:
UMSL Coronavirus Updates
About the Library:
Established in 1846 by civic leaders and philanthropists, the Mercantile exists today as a vibrant community and cultural asset. It is the oldest library west of the Mississippi and the grandparent of St. Louis cultural institutions.
The task of the Mercantile Library as a research library is to make its collections, which have come to concentrate on Western Expansion and the history, development, and growth of the St. Louis region and of the American rail and river transportation experiences, available to the widest number of local and national users.
View the latest edition of the St. Louis Mercantile Library Newsletter here!
CURRENT EXHIBITION

Exhibition catalogues are available for purchase in the Gift Shop
for a limited time offer. Get yours now before they are gone!
Take a look inside the catalogue here!
Library Tours:
To help ensure the safety of our docents, patrons and staff during the pandemic, we are limiting group tours to four people-per-group. To schedule a free, docent-led tour please call 314-516-7248 or email mercantilelibrary@umsl.edu.
Research:
For Research Inquiries:
Email: mercantilelibrary@umsl.edu
Mercantile Library Research Request Form
Phone: 314-516-7240
The UMSL Digital Library
The UMSL Library Catalog, which includes items from the Mercantile and its collection.