Nicolaus Copernicus, the Earth Is a Planet - Dennis Brindell Fradin, Cynthia von Buhler
A surprisingly good picture book biography. It gives readers a good grasp of the subject's life and times. It breaks down complicated concepts in a kid-friendly easy to understand text. And, finally, it conveys the importance of the subject's work and discoveries. Sounds simple, but having read my fair share of picture book biographies I know this is all easier said than done.