| Verfasser | Häufigkeit |
| Eames, Wilberforce 1855-1937 |
63 |
| Sabin, Joseph 1821-1881 |
63 |
| Vail, Robert W. |
63 |
| Hollyfield, Joe G. |
9 |
| LaVail, Matthew M. |
9 |
| Anderson, Robert E. |
8 |
| Davison, John Wells |
4 |
| Hirst, David W |
4 |
| Link, Arthur S. 1920-1998 |
4 |
| Little, John E. |
4 |
| Motter, Thomas Hubbard Vail 1901- |
4 |
| Wilson, Woodrow 1856-1924 |
4 |
| Vail, Eugène Aaron |
3 |
| Ash, John D. |
2 |
| Bowes Rickman, Catherine |
2 |
| Routledge, Clay |
2 |
| Vail, Kenneth E. |
2 |
| Anderson, Robert E. 1940- |
1 |
| Aplanalp, Richard |
1 |
| Baquedano, Elizabeth |
1 |