Baldwin examines the many types of craft in use, the different methods of locomotion, and the art of navigation on uncharted rivers full of hidden obstacles. But he never loses sight of the picturesque aspects of his subject, especially the boatmen themselves-a tribe of rugged and fearless men whose colorful lives are described in great detail.
The Keelboat Age is a segment cut from the history of the frontier, showing the overwhelming importance of river transportation in the development of the West. The rivers were great arteries, carrying a restless people into a new land. The keelboatman and his craft did much to build a nation.