- William Lloyd Garrison
- Herbert Spencer
- Roger Pilon
- Douglas B. Rasmussen
- William Ellery Channing
- Samuel Brittan
- Richard Overton
- Lysander Spooner
- Isabel Paterson
- Sarah Grimké
- Angelo M. Codevilla
- Bo Sánchez
- Suzanne O'Dea Schenken
- Robert H. Zieger
- Antonio Martino
- Michael Rothschild
- Richard Epstein
- Earl C. Ravenal
- Richard Cobden
- Lynn Scarlett