Commonwealth Catalog

Looking for a book, CD, or DVD and don't see it available in your home library's network? ComCat can find it and deliver it for you!

The Commonwealth Catalog searches libraries statewide to find you the materials you are looking for. It broadens your search beyond your local library's resources, and in one easy step, you can search through millions of items at participating libraries. When you make a request, it is delivered right to your home library for easy pick up.

Start searching and borrowing now at


Choose a library near you to find hours, directions, your catalog, and more local resources.
Enter a library name, part of a name, or a city or town in Massachusetts (e.g., Forbes Library or Northampton) or a zip code.


Find a local Massachusetts library. Search its catalog for materials that you can check out immediately.

Can't find it?

Search over 50 million items in the statewide Commonwealth Catalog

If you find an item you want to borrow, just make a request and it'll be delivered to your home library in a few days.