These team pictures were inserted into these packs as a Team Pin-Up:
(Not my pack...This image was taken from an eBay auction)
The 1980-'81 Topps basketball set is noted for the Magic Johnson/Larry Bird double rookie card shared with hoops legend Julius (Dr. J) Erving. It's also the first regular Topps set issued as panels rather than single cards, an idea that must have never been well-received by collectors.
As a guy who is not only a vintage collector but also a 1970s style connoisseur (which is a fancy word for "freak"), it would logically follow that I'm also a fan of 1970s basketball cards. However, I never really started picking up the cards despite the fact that the sets are often quite small and not overly tough to collect. I'll probably be pretty easily hooked if I ever chance upon a nice starer set somewhere.
Right now, I'm just working on that set of Pin-Ups. Of the 16 team pictures in the set, I'm just missing #2 (Boston Celtics) and 11 (New York Knicks). And the reason I started it? I was at a trade session with several other collectors and saw a stack of them lying on a table. Noticing that the team names were written in the same style as 1978 Topps baseball cards, I asked the owner, "What year did these come out?" He didn't even look up from the stack he was looking through. "Figure it out when you get home. They're yours now." He was just waiting for the first sucker to ask what they were.
As I said, it isn't hard to get me collecting something new when I suddenly have some items in my possession.