Kathleen Krull has written much innovative nonfiction for young people, including all of the books in the Lives of . . . series, and has made a chatty, accessible approach to biography her hallmark. She lives in San Diego, California. Visit her website at www.kathleenkrull.com. Kathryn Hewitt's caricatures of famous figures led kids to dub the Lives of . . . series the Big Head books. She has illustrated many books for young readers, some of which she also wrote. She lives in Santa Monica, California. Visit her website at www.kathrynhewitt.com.