The founding of the Notre Dame de Grace Library for Boys and Girls in Montreal in 1943 provides a unique and interesting case study in Canadian library development. It was founded and operated by an umbrella group of local community organizations, using money raised locally, initially to combat a perceived rise in juvenile delinquency during the Second World War. The arguments made in favor of the library by the general public and the organizers were widely reported in the local press. The documentary record provides a rare account of the beliefs held about the efficacy of reading and libraries to shape children, a neglected aspect of children's library development in Canadian historiography.