17. The Photographs on slide 3 were found on the following sites 1. http://blogs.desmoinesregister.com/dmr/index.php/2009/12/17/dollars-gains-spook-corn-and-beans/ 2. http://pective.com/pic/american-10-dollar-bill 3. http://en.allexperts.com/q/Coin-Collecting-2297/2008/2/Lincoln-penny-1.htm 4. http://www.brent-krueger.com/2004nickel.html 5. http://growabrain.typepad.com/growabrain/salesmanship Acknowledgments