The first roller coaster in the U.S. opens, a Soviet cosmonaut becomes the first woman in space, and the Monterey Pop Festival begins, all on this day.
Johnny Vander Meer pitches his way into the record books, Nirvana releases its debut album, Dan Quayle misspells potato, and O.J. Simpson struggles to try on gloves, all on this day.
With the help of the Veteran Affairs website, here's a look at some notable moments in the history of Flag Day.
The Continental Army is established, Congress adopts the Stars and Stripes as the American flag, Paris falls to the Nazis, and a rhesus monkey flies into space, all on this day.