SET AGAINST A BACKDROP of the key industries that helped build North America: iron and steel, forest products, grain, and coal, Pride of the Inland Seas tells the fascinating tale of the development of the Twin Ports during three centuries of economic, technological, political, and social change. This is the story of the people at the Head of the Lakes who built, loaded, and sailed the ships that have made Duluth-Superior synonymous with Great Lakes maritime commerce.