sentences:  This area includes portions of the Carolinas, Virginia, Georgia, Alabama, the entire Ohio Valley, and the Mississippi Valley.Among the most notable of the figures whose papers he collected are Joseph Brant, Daniel Boone, George Rogers Clark, Thomas S. Hinde, John Donelson, James Robertson, General Joseph Martin, and Simon Kenton.Most materials cover the time period from the 1740s through the 1810s.