Sheri Bell-Rehwoldt is an award-winning freelance writer who has contributed to American Profile, Family Circle, Ladies' Home Journal, Go, and The Washington Post. She is the author of Amazing Maya Inventions and Great World War II Projects You Can Build Yourself. Tom Casteel is an illustrator and cartoonist that lives in South Bend, Indiana with his wife and son. He is a recent graduate of the Center for Cartoon Studies and is working on his first graphic novel.