September 24, 1990 Pig Pen runs for class president.

1
Timeline 1990's

• September 24, 1990 Pig Pen runs for class
  president.
• April 21, 1994 Lucy catches a fly ball.
• September 1, 1991Schroeder becomes a spokesman
  for National Piano Month.
• August 6, 1993 Sally discovers that her family
  is "famous" because they're in the telephone
  book.
• December 14, 1999 Charles Schulz officially
  retires.