- The Official American Numismatic Association Grading Standards for United States Coins (Official American Numismatic Association Grading Standards for United States Coins)
- The official American Numismatic Association grading standards for United States coins
- The Numismatist, Volume 12
- The Numismatist; Volume 16
- The Numismatist; Volume 29
- Mark Katz
- E. Ethelbert Miller
- Andrew Kuyvenhoven
- C. Tatum
- Chris Rucker
- Kevin Brennfleck
- Hans Tanner
- David McAdams
- Mike Taylor
- David Spaeth
- Franciscan Friars of the Immaculate
- Anthony Holcroft
- Eric Valli
- Laura Pulfer
- John Guinn
- Matthew Kittay
- Barbara A. Moe
- Hal Hinderliter
- Duane W. Bailey
- Robert D. Hatcher Jr.