- “A Guide Book of Gold Dollars” by Q. David Bowers
- “Gold Dollars” by David W. Akers
- “U.S. Gold Quarter Eagles” by David W. Akers
- “The United States $3 Gold Pieces 1854-1889″ by Q. David Bowers
- “U.S. Gold Half Eagles” by David W. Akers
- “Early United States Half Eagles 1795-1838″ by Walter Breen
- “United States Half Eagles 1839-1929″ by Walter Breen
- “U.S. Half Eagle Gold Coins” by Robert W. Miller, Sr.
- “U.S. Gold Eagles” by David W. Akers
- “United States Eagles” by Walter Breen
- “U.S. Gold Double Eagles” by David W. Akers
- “A Guide Book of Double Eagle Gold Coins” by Q. David Bowers
- “Encyclopedia of U.S. Gold Coins 1795-1933″ by Jeff Garrettt & Ron Guth
- “A Handbbook of 20th Century United States Gold Coins 19907-1933″ by David W. Akers
- “The Harry W. Bass, Jr. Museum Sylloge” by Q. David Bowers
- “Collecting & Investing Strategies for United States Gold Coins” by Jeff Ambio
- “Gold Coins of the Carson City Mint” by Douglas Winter
- “Gold Coins of the Charlotte Mint 1838-1861″ by Douglas Winter
- “Gold Coins of the Dahlonega Mint 1838-1861″ by Douglas Winter
- “Gold Coins of the New Orleans Mint 1838-1909″ by Douglas Winter
- “Private Gold Coins and Patterns of the United States” by Donald Kagin
