Gallery of JKA cabinet images I’ve collected over the past few years (the main JKA page includes a checklist). This is a rare set, but the cards are not one-of-a-kind; there are known dupes of many of them. If you have any scans to add, please contact me.
The 3 backs shown all have Chicago addresses. The other back is of a Mathewson card that likely belonged to Leon “Red” Ames.