| 1938: The House Committee on Un-American Activities begins its work of searching for subversives in the United States. |
| 1940: The evacuation of Allied forces from Dunkirk begins. |
| 1946: A patent is filed in the United States for the H-bomb. |
| 1958: Union Square, San Francisco, becomes a state historical landmark. |
| 1961: The civil rights activist group, Freedom Ride Coordinating Committee, is established in Atlanta. |