Here are the covers for the four books of the Jerusalem Quartet by Edward Whittemore, in one of the first published editions:
I'm looking for the source of the different images used on the covers. Books 1 and 3 images look like medieval engraving. Book 2 image is obviously a face from a standard deck of cards, but I'm interested in knowing the exact design used here. I'm not sure where book 4 image could come from.