The Canadian International Paper Company (CIP) was a significant player in the forest products industry, originally established as the St. Maurice Lumber Company in 1919 before being renamed in 1925. Acquired by various companies over the years, CIP operated multiple plants across Canada, including hydroelectric plants on the Gatineau River. Notable for its research department, which started in 1923, the company faced challenges in some locations, sparking employee initiatives like Tembec to take over operations. Today, the legacy and impact of CIP are seen through the various companies that have evolved from its history.