Currently, the U.S. Federal Reserve (Fed) issues dollar bills in seven denominations: $1, $2, $5, $10, $20, $50, and $100. While the $500, $1,000, and $10,000 bills have been out of production for ...

Artist Dan Tague has found hidden messages encrypted in U.S. dollar bills. He would fold a dollar bill as many as 100 times to come up with phrases made up by the letters on the money. Tague's ...