- Alberts, Bruce, 1938- (2)
- Hunt, Tim, 1943- (2)
- Johnson, Alexander D. (2)
- Raff, Martin C. (2)
- Roberts, K. (Keith), 1945- (2)
- Walter, Peter, 1954- (2)
- Wilson, John H., 1944- (2)
- Heald, Rebecca (1)
- Lewis, Julian, 1946-2014 (1)
- Morgan, David (1)
- Morgan, David Owen, 1958- (1)