1968–1975
1975–1980
1980–1984
1984–1991
1992–1995
1995–2004
2004–2012
This series logo aired from July 15, 1968 to January 13, 2012.
- On April 14, 2011 ABC announced that in will not return because of the cancellation and bad ratings.
2013
This series logo aired from July 15, 1968 to January 13, 2012.