This Day, That Year – April 18

Superman, a fictional character created by writer Jerry Siegel and artist Joe Shuster, debuted in the comic book Action Comics on this day in 1938.

Did you know that:

• Irving Langmuir was granted a patent for an incandescent gas lamp on this day in 1916
• The first crossword puzzle book was published by Simon and Schuster on this day in 1924
• Kourtney Kardashian is an American media personality, socialite, and model born on this day in 1979