​​​The Commonwealth Catalog, also called ComCat, extends your search beyond the C/W MARS library network. Search through millions of items at participating libraries across Massachusetts.

Requests will be delivered to your local library for pickup.

Please search the C/W Mars online catalog first. If the material you want is not available, you can request it via the Commonwealth Catalog. 

Log in below to place, manage, and cancel requests in the statewide Commonwealth Catalog.

1. Click here to access the Commonwealth Catalog.

2. Choose your library.

3. Enter your library card number and password.


Explore the Commonwealth Catalog as a guest

Find Books, Music, Movies and More!


​Tuesday & Thursday    1 pm - 8 pm

Wednesday & Friday    9 am - 5 pm

Saturdays*                   10 am-2pm

​*The library is closed on any Saturday before a Monday holiday


Commonwealth Catalog

​Log into your CW Mars Account

When you log in you can:

See the books you have checked out

Renew books

Place holds on books

​​If you cannot log in, please contact us at 

(508) 754 -0793​.

If you forgot your password we can reset it. 

More useful CWMars links:

CW Mars Member Libraries

​New titles at CWMars Member Libraries

 - Select a library

Catalog search


​Richards Memorial Library   44 Richards Avenue, Paxton, MA 01612      (508) 754 -0793​