A series of monographs on the History of America as portrayed in the evolution of its Highways of War, Commerce, and Social Expansion. Comprising the following volumes:

Paths of the Mound-Building Indians and Great Game Animals.

Indian Thoroughfares.

Washington's Road: The First Chapter of the Old French War.

Braddock's Road.

The Old Glade (Forbes's) Road.

Boone's Wilderness Road.

Portage Paths: The Keys of the Continent.

Military Roads of the Mississippi Basin.

Waterways of Westward Expansion.

The Cumberland Road.

Pioneer Roads of America (two volumes).

The Great American Canals (two volumes).

The Future of Road-Making in America.

Forbes's road, fortified at Carlisle, Shippensburg, Chambersburg, Loudon, Littleton, Bedford, Ligonier, and Pittsburg became the great military route from the Atlantic seaboard to the trans-Allegheny empire. By it Fort Pitt was relieved during Pontiac's rebellion and the Ohio Indians were brought to terms. Throughout the Revolutionary War this road was the main thoroughfare over which the western forts received ammunition and supplies. In the dark days of the last decade of the eighteenth century, when the Kentucky and Ohio pioneers were fighting for the foothold they had obtained in the West, this road played a vital part.