Mon-Thur 9am - 9pm
Friday 12pm - 5pm
Saturday 9am - 5pm
Sunday Closed

Finding Books


Calvert Library partners with St. Mary's County Public Library and Charles County Library to offer a wide array of books and other materials for the residents of Southern Maryland. You can search the Tri-County catalog online using COSMOS.

Search COSMOS.

Didn't find it in COSMOS? There are other ways we can help you in your search.


The Maryland-wide MARINA system allows us to search other public libraries in the state to find items not owned in Maryland. Please allow plenty of time to receive your book.

Place a MARINA request.

If you still can't find what you need, please ask the librarian.