May 13, 1913 (113 years ago)
•Igor Sikorsky becomes the first man to pilot a four-engine aircraft.

May 13, 1940 (86 years ago)
•Queen Wilhelmina of the Netherlands flees the Nazi invasion in the Netherlands to Great Britain. Princess Juliana takes her children to Canada for their safety.

May 13, 1958 (68 years ago)
•The trade mark Velcro is registered.

May 13, 1980 (46 years ago)
•An F3 tornado hits Kalamazoo County, Michigan. President Jimmy Carter declares it a federal disaster area.

May 13, 1994 (32 years ago)
•Johnny Carson makes last television appearance on The David Letterman Show.