Incoming Resources
- Penny, the forgotten coin, by Denise Brennan-Nelson ; illustrated by Michael Glenn Monroe
- 2015 U.S. coin digest, the complete guide to current market values, David C. Harper, editor ; Harry Miller, market analysis
- A guide book of United States coins, R.S. Yeoman ; Jeff Garrett, senior editor ; Q. David Bowers, research editor ; Kenneth Bressett, editor emeritus
- A guide book of United States coins, R.S. Yeoman ; senior editor, Kenneth Bressett ; research editor, Q. David Bowers ; valuations editor, Jeff Garrett