PREFACE
IN the study of Waterways of Westward Expansion, the Ohio River—the "Gateway of the West"—occupies such a commanding position that it must be considered most important and most typical. Such is its situation in our geography and history that it is entitled to a most prominent place among Historic Highways of America which greatly influenced the early westward extension of the borders and the people of the United States. Not until a late period in the expansion era—the day of steam navigation—did the Great Lakes rise to importance as highways of immigration, and south of the Ohio River Basin there was no westward waterway of importance. The day of the keel-boat and barge was of moment in the broadening of the American sphere of influence on this continent, and nowhere is the study of these
