This souvenir book shows how Canada and the United States are joining in the greatest river development in the entire world. It includes progress photographs from the time the first ground was broken in 1954, the first trees routed out by bulldozers, the first cofferdams built, to what has been accomplished to date, and on to the artists' sketches of the completed works. This book is designed to serve as a handy reference for people interested in the size of the dams or the dikes, the depths of the channel and to answer other questions that may arise.