|On this day in history, May 22
A baseball hero enlisted in the military for World War II, a former U.S. Vice President was indicted for treason, and the strongest earthquake ever recorded struck in Chile.
|On this day in history, May 21
The first aviator successfully completed the first non-stop flight across the Atlantic Ocean, the so-called "White Night Riots" erupted in San Francisco, and Johnny Carson hosted his final 'Tonight Show.'
|On this day in history, May 20
The first publication discussing the AIDS virus was published, a famous battle of the Vietnam War was completed, and the first prisoners arrived at a notorious concentration camp during WWII.
|On this day in history, May 17
A major piece of the United States stock system was established; a landmark decision was made by the U.S. Supreme Court; and the first state took action to legalize same-sex marriages.
|On this day in history, May 16
The first Oscars in history were handed out, President Andrew Johnson was acquitted in his impeachment trial, and the Space Shuttle Endeavor made its final flight.
|On this day in history, May 15
After more than eight years of fighting the Red Army begins its withdrawal from Afghanistan, Gov. George Wallace was shot, and McDonald's opened it's first restaurant.
|On this day in history, May 14
Israel took action in 1948 that would immediately trigger a war in the Middle East, several demonstrators were beaten in 1961 during a civil rights protest, and the U.S.'s first space station was launched in 1973.
|On this day in history, May 13
A now-common household item was first trademarked in 1958, Johnny Carson made his final television appearance in 1994, and the U.S. declared war on Mexico in 1846.
|On this day in history, May 10
The first Transcontinental Railroad is completed in Utah, an assassination attempt is carried out against President George W. Bush, and Mother's Day was observed for the first time in the U.S.
|On this day in history, May 9
A massive earthquake with a magnitude of nearly 9.0 struck in Peru, U.S. Congress officially opens impeachment proceedings against President Nixon over the Watergate Scandal, and a bank robbery triggered one of the largest police pursuits in California history.