During a recent visit to Book World, I was browsing the classics section when I came across this:

Two different book covers that, when arranged side by side, create a single piece of art.

This isn’t a brand new concept (I see it on the spines of boxed sets all the time), but this example stood out to me. It’s a clever setup — one I’d like to try in the future. Perhaps there will be an opportunity to release special edition Sarah & Katy books that merge the covers someday.

This is a cover design concept I’ll definitely keep filed away for future series or books with sequels.