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, special contributors, Thomas Augustsson, Miloš Kudweis, Juozas Minikevicius, Jay Recher, Val Tsyrklevich, Ludek Vostal ; edited by Tracy L. Schmidt, 1961-present