The three years with the most views of the Wrigley board among Cubs cards are 1960 - 1962. I decided to browse through the set to see if there were other looks. I don't own any of these complete sets, so my browsing was done via the Cybercard Museum.
There were.several from each of the years:
Both the 1960 and 1961 sets give eight additional peeks at the board.
In the 1962 set we're down to just a couple extra looks.