The Atwater Library and Computer Centre (French: Bibliothèque et centre d’informatique Atwater, officially the Atwater Library of the Mechanics' Institute of Montreal) is an independent community library in Westmount, Quebec, Canada, operating the oldest subscription library service in the country. It is located at 1200 Atwater Avenue. It is a privately operated, non-government, nonprofit organization, and a registered charity. It was founded in 1828.[1]