From the National Contract, Local TV, and the World Series and All-Star Games. The files are all in MSExcel format. So, use your "Save Target As" command to save them to your hard disk.
Local TV/Radio Revenues by team: 1951, 52-1994
MLB's National TV Contracts: 1962-2006
World Series and All-Star Game contracts: 1951-1956
World Series Ratings 1968-2006