Joan Holub has authored and/or illustrated over 140 children’s books, including the Goddess Girls series, the Heroes in Training series, the New York Times bestselling picture book Mighty Dads (illustrated by James Dean), and Little Red Writing (illustrated by Melissa Sweet). She lives in North Carolina and is online at JoanHolub.com. (Bio via http://www.simonandschuster.com/authors/Joan-Holub/1440894)
Suzanne Williams is a former elementary school librarian and the author of over 70 books for children, including the award-winning picture book Library Lil (illustrated by Steven Kellogg). She and Joan Holub co-author several series including Goddess Girls (ages 8 – 12), Heroes in Training (ages 7 – 10), Grimmtastic Girls (ages 8 – 12), and Thunder Girls (ages 8 – 12). Suzanne lives in Renton, WA. You can find more information about Suzanne and her books at www.suzanne-williams.com.