- Sarah Brash
- Irene Taylor
- Don S. Lopez
- Karl-Heinz Reuband
- David Landy
- Tom Cheetham
- Maev Kennedy
- James M. Cannon
- Robert M. Citino
- Mark Swadling
- Stuart Bolger
- Bentley Brinkerhoff Gilbert
- Michael W. Austin
- Michael P. Riccards
- Linda Lotridge Levin
- Oliver Hilmes
- Peter Simkins
- Christopher Hewitt
- Steven I. Levine
- National Cowboy & Western Heritage Museum