| Verfasser | Häufigkeit |
| Fletcher, Robert |
21 |
| Fletcher, Robert H. |
11 |
| Fletcher, Charles Robert Leslie |
9 |
| Fletcher, Suzanne W. |
9 |
| Fletcher, Robert 1973- |
8 |
| Büscher, Bram 1977- |
4 |
| Fletcher, Robert Huntington 1885-1972 |
4 |
| Fletcher, Robert James 1877-1965 |
4 |
| Fletcher, Grant S. |
3 |
| Fletcher, Louise 1934-2022 |
3 |
| Wagner, Edward H. 1940- |
3 |
| Burke, Edward |
2 |
| Burroughs, Alvin |
2 |
| Bürgin, Philippe 1994- |
2 |
| Clay, Shirley |
2 |
| Crowder, Robert |
2 |
| Dixon, George |
2 |
| Ewing, John |
2 |
| Fletcher, Milton |
2 |
| Fletcher, Robert R. |
2 |