Missing cards from Topps sets..
 

I am not talking about the cards that never were or the ones contracted to Bowman. I wanted to know why the 1966 Topps set did NOT include World Series cards? The 1965 World Series was one of the best of the decade and a great showcase for Sandy Koufax.

Also, the 1968 Topps set omits several team cards: (Why?)

Boston Red Sox, Cleveland Indians, Washington Senators, New York Yankees, Chicago Cubs, San Francisco Giants, Houston Astros

The 1969 Topps set has NO team cards, I presume this is because of the expansion?