This collection contains correspondence, progress reports, cost and shipping reports, blueprints, specifications, charts and maps, and many photographs concerning the North Shore Paper Company (the Tribune Company's second Canadian pulp and paper mill at Baie Comeau, Quebec) and the permanent planned community which grew up around it.

This collection describes the construction and initial testing of the Tribune Company's paper mill at Thorold, Ontario. The collection consists chiefly of correspondence among Robert R. McCormick, president of the Tribune Company, Warren Curtis, Jr., who designed and supervised the building of the mill, and other executives of the company.