- Today in History: April 20, the Columbine High School shootings - SFGATE
- Today in History: April 21, Prince dead at age 57 - SFGATE
- Today in History: April 19, the American Revolutionary War begins - SFGATE
- Today in History: April 22, the Oklahoma Land Rush of 1889 - SFGATE
- Today in History: April 20, the Columbine High School shootings - Daily Independent
- Today in History - April 6: Jack Hoffman's iconic Husker touchdown run - YouTube
- Today in History: April 4 - Dr. Martin Luther King Jr., was assassinated in Memphis in 1968
- TODAY IN HISTORY | Advertiser-Tribune
- Today in History - April 6: Jack Hoffman's iconic Husker touchdown run - WOWT
- Today in History - April 6: Jack Hoffman's iconic Husker touchdown run - WOWT