1967 – Led by Abbie Hoffman, the Youth International Party temporarily disrupts trading at the New York Stock Exchange by throwing dollar bills from the viewing gallery, causing trading to cease as brokers scramble to grab them.
1954 – The Communist Control Act goes into effect, outlawing the Communist Party in the United States
1909 – Workers start pouring concrete for the Panama Canal
1857 – The Panic of 1857 begins, setting off one of the most severe economic crises in United States history
1816 – The Treaty of St. Louis is signed in St. Louis, Missouri
1682 – William Penn receives the area that is now the state of Delaware, and adds it to his colony of Pennsylvania
1662 – The 1662 Book of Common Prayer is legally enforced as the liturgy of the Church of England, precipitating the Great Ejection of Dissenter ministers from their benefices
1215 – Pope Innocent III issues a bull declaring Magna Carta invalid.