These final two move into White Whale territory.
The 1961 and 1962 cards used the same photo. All I'd have to do is find the 1960 team picture and I'm good.
Nope, I'm not good. Topps didn't use the 1960 photo. The 1959 team photo was used on the 1960 card, so Topps didn't go back in time, either. My next thought was that the two pictures were taken at the same time. But clearly, they weren't as the Topps card has a whole row of players sitting while the Cubs team photo has just the bat boy on the ground. Somehow, Topps got a completely different picture to use.
I see two ways to get this resolved. The 1961 Sporting News Baseball Guide is one possibility. Guides from back then are harder to find and cost more than five bucks, so I'm going to have to wait. The other solution is to occasionally do searches on Google and Ebay for 1960 Cubs team photo and see if the Topps version shows up.
The 1975 card is the other White Whale. I already know that the 1975 Sporting News Guide won't help. Google and Ebay are my only options for this one too.
It could be days or years before I get to the bottom of these last two..
It might never happen.
It might take 108 years.
It will happen!