en.wikipedia.org/wiki/Counterfeit_United_States_currency

Counterfeiting of the currency of the United States is widely attempted. According to the United ... Counterfeit warning printed on the reverse of a 4 shilling Colonial currency in 1776 from Delaware Colony. American ... In March 2006, agents from ICE and the Secret Service seized 250 notes, each bearing a denomination of ...

www.uscurrency.gov/history

In order to finance the Civil War, Congress authorizes the U.S. Department of the Treasury to issue non-interest-bearing Demand Notes. These notes earn the ...

www.history.com/news/8-things-you-may-not-know-about-american-money

Feb 25, 2013 ... From the founding of the United States to the passage of the National ... 4. The highest-denomination note ever printed was worth $100,000.

www.newyorkfed.org/aboutthefed/fedpoint/Fed01.html

There is about $1.2 trillion dollars of U.S. currency in circulation. ... U.S. coins and paper currency in the hands of the public—totaled about $1.2 trillion dollars. ... Each note costs about four cents to produce, though the cost varies slightly by ...

www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-money/v/counting-american-coins

Sal adds to find ​the total value when given an amount US coins. ... The four common types of coins are pennies, nickels, dimes, and quarters. Less common  ...