Incoming Resources
- The art of money, the history and design of paper currency from around the world, by David Standish ; photographs by Tony Armour Photography, Joshua Dunn
- Standard catalog of world paper money, editor, Tracy L. Schmidt ; special contributors, Thomas Augustsson, Milos Kudweis, Juozas Minikevicius, David Murcek, Jay Recher, Ludek Vostal, Pam West, 1961-present