- Penniman, Howard Rae, 1916- (5)
- American Enterprise Institute for Public Policy Research (2)
- American Enterprise Institute (1)
- Butler, David, 1924- (1)
- Farrell, Brian (1)
- Mujal-León, Eusebio, 1950- (1)
- Ranney, Austin, 1920- (1)
- Sait, Edward McChesney, 1881-1943 (1)