After collecting just about everything and anything baseball-related over the past half century, I can't think of any genre of collectable I find more satisfying collecting than caps. In the three years since I started this thread, my collection has grown by leaps and bounds, but I'm still making new discoveries, and the competition isn't too fierce — unlike pinbacks, for instance.
Here are a few of my more recent pickups, along with a link to gallery of all my caps. Included below are the early 50s Fort Worth Cats (worn by Rex Barney), the late 60s Asheville Tourists (Reds farm club), a late 40s Oakland Oak kids cap and a late 50s White Sox cap (one of the last MLB caps made by Spalding). The White Sox cap was the final one I needed to get all 16 of the original pre-expansion MLB caps.
https://chris-counts.pixpa.com/galleries/gallery-31