Commonwealth Catalog

If you can't find it in our local catalog, you can search other libraries across the Commonwealth of Massachusetts via the Commonwealth Catalog (also known as ComCat).  

Requests will be delivered to your local library for pickup.

To access the Commonwealth Catalog (ComCat), click here.

Search for materials, or sign in by clicking Please Login in the top right of the Commonwealth Catalog hompeage.

Select your local CW MARS library from the list, and enter your library card number and your CW MARS account password.

Click Submit to log in.

Once logged in, you can place, manage, and cancel requests in the statewide Commonwealth Catalog.

Funding for the Commonwealth Catalog is provided by the Massachusetts Board of Library Commissioners and the Institute of Museum and Library Services.

Need Help? Visit the Commonwealth Catalog FAQ or contact your local library for assistance.