St. Louis Mercantile Library | UMSL

Common Searches

Effective May 25, 2021 - In alignment with CDC and St. Louis County Health guidelines, the University of Missouri–St. Louis, including the Thomas Jefferson Library building and St. Louis Mercantile Library, no longer requires fully vaccinated students, faculty, staff and visitors to wear face coverings or maintain social distancing. People who are not fully vaccinated (those who are not at least two weeks post-completion of a vaccination series) remain at risk of contracting and transmitting the virus. To protect their own health and the health of people around them, it is vital that those not fully vaccinated continue to wear a face covering when on campus, practice social distancing, and maintain other CDC-recommended measures to prevent the spread of SARS-CoV-2. Those who are fully vaccinated and feel more comfortable wearing a face covering or practicing social distancing are encouraged to do so based on their own comfort levels and individual health factors.

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!



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


For Research Inquiries:


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.