Incoming Resources
- Warman's antiques & collectibles 2019, Noah Fleisher
- The card catalog, books, cards, and literary treasures, the Library of Congress ; foreword by Carla Hayden
- A guide book of United States coins, R.S. Yeoman ; senior editor, Kenneth Bressett ; research editor, Q. David Bowers ; valuations editor, Jeff Garrett
- Collectibles handbook & price guide 2021-2022, Judith Miller