Square by Mac Barnett; illustrated by Jon Klassen; 2018. Digitally and with watercolor and graphite. Published by Candlewick Press.
Brief summary: Square goes into his secret den every day and pushes out a square of rock and piles it with the other squares. One day Circle rolls by and compliments Square for his wonderful sculpture that looks like the artist. Could Square sculpture one of Circle? He works all night in the rain. Will Circle be pleased with his results?
Comments: Second of the shape trilogy of Mac Barnett and Jon Klassen. Young readers will be amused by the sense of humor in Square as they were in Triangle. The illustrations are blacks, grays, and browns.