According to WMTW, "Dr. Seuss' Horse Museum" will hit store shelves this September.

In the book, a horse leads a group of children on an art museum tour.  The kids will see re-imagined horse versions of classics from Picasso, Pollock, and more.  Some classic Seuss characters will be back, too.  Including the Cat In The Hat and The Grinch.

This is not the first time we've gotten a posthumous book from Dr. Seuss.  In 2015, "What Pet Should I Get?" became a best seller.