About the Author

Donald C. Jackson, Cornelia F. Hugel Professor of History at Lafayette College, Easton, Pennsylvania, is the author of Great American Bridges and Dams. James P. Ronda, is retired as Professor at the University of Tulsa, where he held the H. G. Barnard Chair of Western American History. He is widely recognized for his extensive scholarship on the Lewis and Clark expedition, including the pathbreaking Lewis and Clark Among the Indians. He is also a distinguished historian of the early American fur trade, Astoria and Empire. Professor Ronda's recent publications include The West the Railroads Made.