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United States one-dollar bill - Wikipedia
What Do the Symbols on the U.S. $1 Bill Mean? | HowStuffWorks
Decoding a United States One Dollar Bill
Some $1 bills may be worth thousands to collectors. How to ...
$1 Note - The U.S. Currency Education Program
44 Incredible Facts About the $1 Bill | Work + Money
The Seven Denominations | U.S. Currency Education Program