On This Day May 20th
On This Day in history:
1830- The fountain pen is patented by H.D. Hyde.
1874- Levi Strauss begins marketing blue jeans with copper rivets.
1916- Norman Rockwell's first cover on "The Saturday Evening Post" appears.
1990- The Hubble Space Telescope sends back its first photographs.
1993- The final episode of "Cheers" is aired on TV.