Parents
Spouse
Children
Siblings
1900
Feb 3
| 1900 • Australasian prospector Albert Fuller Ellis identifies phosphate deposits on the Pacific Islands of Nauru and Banaba Island (Ocean Island). |
1900
Age: 2m
| 1900 • U.S. Secretary of State John Hay announces the Open Door Policy to promote American trade with China. |
1910
Age: 9y
| 1910 • Emperor Sunjong of the Korean Empire abdicates and the country's monarchy is abolished. |
1920
Age: 19y
| 1920 • Irish War of Independence: Catholic riots in Belfast in protest at the continuing British Army presence. |
1922
Sep
Age: 22y
|
marriageHenry Frank Lenser Oil City, Venango, Pennsylvania, USA ⇓ After their marriage, they moved to 12 Pearl Avenue, Oil City. The house was built in 1900. |
| 1922 • In the Russian Soviet Federative Socialist Republic, the Cheka becomes the Gosudarstvennoye Politicheskoye Upravlenie (GPU), a section of the NKVD. |
1925
Sep 24
Age: 25y
birth of childJack Clinger Lenser Oil City, Venango, Pennsylvania, USA ⇓ 2 Sources ⇓ |
| 1925 • Scopes Trial: Dayton, Tennessee, biology teacher John Scopes is arrested for teaching Charles Darwin's Theory of Evolution. |
1930
Age: 29y
| 1930 • Mahatma Gandhi sets off on a 200-mile protest march towards the sea with 78 followers to protest at the British monopoly on salt; more will join them during the Salt March that ends on April 5. |
1930
Jan 8
Age: 29y
birth of childLois L Lenser Oil City, Venango, Pennsylvania, USA ⇓ 1 Source ⇓ |
| 1930 • The dedication of George Washington's sculpted head is held at Mount Rushmore in South Dakota. |
1940
Age: 39y
| 1940 • WWII: The Battle of Britain begins |
1950
Age: 49y
| 1950 • The Suppression of Communism Act passed on June 26, comes into force in South Africa. |
1951
Apr 23
Age: 51y
|
residenceOil City, Venango, Pennsylvania, USA ⇓ Henry and Helen are living at 124 East Seventh St. in Oil City 1 Source ⇓ |
| 1951 • Robert Menzies' Liberal Party government in Australia is re-elected for a second term. |
1968
Aug 20
Age: 68y
| 1968 • Douglas Engelbart publicly demonstrates his pioneering hypertext system, NLS, in San Francisco, together with the computer mouse, at what becomes retrospectively known as "The Mother of All Demos". |