- Abbott, Harold T.126
- Du Pont, Alfred I. (Alfred Irénée), 1864-1935109
- Williamsburg Historic Records Association (Williamsburg, Va.)39
- Pollard, John Garland, 1871-193723
- Wilson, Woodrow, 1856-192423
- Daniels, Josephus, 1862-194822
- West Virginia University22
- Baker, Newton Diehl, 1871-193721
- Fall, Albert B. (Albert Bacon), 1861-194421
- United States. Forest Service21
- College of William and Mary17
- Buffalo Society of Natural Sciences16
- Tyler, Lyon Gardiner, 1853-193514
- Williams, Morley Jeffers, 1886-197714
- Jeffrey S. Evans & Associates13