John Sullivan is Emeritus Professor of Christian Education at Liverpool Hope University, UK. He is the author and editor of nine books on aspects of Christian education.

Taeeun Yoo has twice received the prestigious New York Times Best Illustrated Children’s Book Award. She has illustrated many books, including Strictly No Elephants by Lisa Mantchev, which has been published in twelve countries. The New York Times called it a “sunny, smart, tongue-in-cheek tale.”

Other books include So Many Days and Only a Witch Can Fly, both by Alison McGhee, and Round by Joyce Sidman, which received four starred reviews. Taeeun was also the recipient of the Ezra Jack Keats Award and the Society of Illustrators’ Founders Award. She lives in South Korea with her family.