Central and Western Massachusetts Automated Resource Sharing, or CW MARS,[1] is a library consortium in central and western Massachusetts dedicated to efficient resource sharing and rapid access to information.
In 1984, the network was incorporated as a 501(3)(c) not-for-profit corporation and the first member libraries began circulating on the shared system.
The Executive Committee works to develop and recommend policies, budget and membership.
As of 2021[update], CW MARS has more than 150 members and 175 branch locations,[2][3] including public, academic, school, and special libraries.
CW MARS offers a shared online computer system and combined collections of more than nine million items.