- Pettijohn, F. J. (Francis John), 1904- (5)
- Pettijohn, F. J. (Francis John), 1904-1999 (2)
- Potter, Paul Edwin (2)
- Siever, Raymond (2)
- Krumbein, William Christian, 1902- (1)
- Potter, Paul Edwin, 1925- (1)
- Riggi, Juan Carlos (1)
- Sachet, Marie-Hélène (1)
- Schmincke, Hans-Ulrich (1)