Commager, Henry S. Documents of American History, I. New York, 1958.

Crick, B. R. and Miriam Alman (eds.). A Guide to Manuscripts Relating to America in Great Britain and Ireland. New York, 1961.

Curti, Merle, et al. The Making of an American Community, A Case Study of Democracy in a Frontier County. Stanford, 1959.

Day, Richard E. (comp.). Calendar of the Sir William Johnson Manuscripts in the New York State Library. Albany, N. Y., 1909.

DePuy, Henry F. A Bibliography of the English Colonial Treaties with the American Indians including a Synopsis of Each Treaty. New York, 1917.

DeSchweinitz, Edmund A. The Life and Times of David Zeisberger. Philadelphia, 1870.

Doddridge, Joseph. Notes on the Settlement and Indian Wars of the Western Parts of Virginia and Pennsylvania. Pittsburgh, 1912.

Dunaway, Wayland F. A History of Pennsylvania. Englewood Cliffs, N. J., 1948.

——. The Scotch-Irish of Colonial Pennsylvania. Chapel Hill, 1944.

Egle, William H. History of the Commonwealth of Pennsylvania. Philadelphia, 1883.