For “Your Island,” “Your Forest” and “Your Farm,” the author and illustrator radically simplified what was on the page.

Jon Klassen’s subversive “Hat” trilogy – which included “I Want My Hat Back” and “This Is Not My Hat” – concludes with the release of his latest picture book, “We Found a Hat ...

Jon Klassen is best known for dryly humorous picture books with a bit of darkness about them—“I Want My Hat Back” (2011) and “This Is Not My Hat” (2012) being the most striking examples.

For author and illustrator Jon Klassen, his imagined reader was always a child, reading silently to themselves. That changed when he set about writing his first board books — chunky cardboard ...