《Great Lakes and the Vessels That Plough Them》 - 免费有声读物

The author sets forth the facts of the Great Lakes' largest fleet of freighters in the world, explaining what an enormous role Great Lakes cargo shipping played in the U.S. manufacturing economy at the time of writing (1909). He also describes the passenger cruising industry there. Finally, he provides a short history of the Great Lakes and their role in American history. (Summary by Ted Lienhart)