Confession time: I often don’t care for picture book biographies. They’re hard to do well; either their subject matter is too adult for the preschool crowd, or their treatment of their subject is too shallow for the adult reading it. It’s a tricky thing to get right, but author Alicia D. Williams and illustrator Jaqueline Alcántara have struck a near-perfect tone with Jump at the Sun, a compelling and delightful picture book about national treasure Zora Neale Hurston.