- H. Jackson Brown Jr.
- Barbara Ann Kipfer
- Adam Smith
- Daniel Yergin
- Jacques Barzun
- Eugene Ehrlich
- Thomas S. Kuhn
- Eric Hoffer
- J.I. Rodale
- Jane Jacobs
- Ludwig von Mises
- H.L. Mencken
- Michael Murray
- Jonathan Clements
- John Peers
- Carolyn Warner
- John E. Flaherty
- John J. Tarrant
- Laurence Barton
- Samuel I. Hayakawa