Births on December 20

Ramon Stoppelenburg, Dutch businessman and author

5 Jan

Democratic Kampuchea
The Khmer Rouge proclaim the Constitution of Democratic Kampuchea.
13 Apr

Thomas Jefferson
The United States Treasury Department reintroduces the two-dollar bill as a Federal Reserve Note on Thomas Jefferson's 233rd birthday as part of the United States Bicentennial celebration.
8 May

Six Flags Magic Mountain
The rollercoaster The New Revolution, the first steel coaster with a vertical loop, opens at Six Flags Magic Mountain.
11 Oct

Gerald R. Ford
George Washington's appointment, posthumously, to the grade of General of the Armies by congressional joint resolution Public Law 94-479 is approved by President Gerald R. Ford.
13 Oct

Ebola
The first electron micrograph of an Ebola viral particle is obtained by Dr. F. A. Murphy, now at U.C. Davis, who was then working at the C.D.C.