I'm only talking about following up a World Series title with a Super Bowl title a few months later. I'm sure it has happened the other way, also,which would actually occur in the same calendar year, but that's another topic. And, I'm sure it has happened a few times with NBA titles, NHL titlesand so forth, also. But, for now, we're only talking about this one way. We are possibly headed for another one, if the Pats can follow up the Red SoxWorld Series title with another Super Bowl title, just like 3 years ago. The list, so far, is as follows:

1927 New York Yankees & Giants
1935 Detroit Tigers & Lions
1938 New York Yankees & Giants
1956 New York Yankees & Giants

1970 Baltimore Orioles & Colts
1979 Pittsburgh Pirates & Steelers
1986 New York Mets & Giants
2004 Boston Red Sox & Patriots

2007 Boston again?

The first 4 occurred before my lifetime, while the other 4 occurred during my lifetime.