That changed recently. When I picked up the missing Sandberg SCD card, I bought the entire book to get the card. That meant seven non-Cubs cards that I didn't need. I made them available to anyone that wanted them.
Tom from The Angels, In Order put in a claim for the Jim Abbott card. I sent it his way and he sent me some Cubs cards...
Since I already had most of these, they will end up in the birthday packs that I give to the kids at my school. I give them a mix of Tigers (since Detroit is the local favorite) and Cubs (since the kids need to get cards from the best team ever, as I tell them!).