en.wikipedia.org/wiki/History_of_the_United_States_dollar

The history of the United States Dollar refers to more than 240 years since the Continental Congress of the United States authorized the issuance of Continental Currency in 1775. On April 2, 1792, the United States Congress created the United States dollar as the country's standard unit of money. ..... Their value, relevant only to collectors, is approximately one thousand US ...

en.wikipedia.org/wiki/Obsolete_denominations_of_United_States_currency

This article is about denominations of the United States dollar that are no longer circulated. For denominations that were planned but never circulated, see Cancelled denominations of United States currency. The United States has produced several coins and banknotes of its dollar which no longer ...

www.usa.gov/currency

Feb 26, 2019 ... Learn about American money. ... The U.S. Mint is responsible for manufacturing and circulating coins to pay for goods and services.

www.uscurrency.gov/history

Congress authorizes a new class of currency, known as “United States notes,” or ... all Federal Reserve notes are made about 30 percent smaller—measuring ...

www.treasury.gov/resource-center/faqs/Currency/Pages/denominations.aspx

Jul 8, 2014 ... Read More about the secretary .... The purpose of the United States currency system is to serve the ... I have one that I want to know about.