Helaine Becker has written over seventy books. She attended high school in New York before graduating from Duke University. She is married with two sons and is an active swimmer, runner and cyclist, as well as being a compulsive read-aholic. She has an orange belt in karate and is contemplating going for her grapefruit belt.

Her award-winning non-fiction includes Counting on Katherine, Worms for Breakfast and Zoobots, and she has written many picture books and young adult novels. She also writes for children's magazines and for children's television.

Dow Phumiruk is a retired pediatrician and has found her passion in children's book art. Her favourite subjects are children (especially girls) and animals. She lives in Lone Tree, Colorado with her husband of over 2.5 decades, three artistic daughters, one dwarf rabbit, one hamster, one tiny frog, and a really cool bearded dragon named Sparkles. Dow also enjoys fast and furious sewing projects and limited hiking and biking. She is the illustrator of Helaine Becker's Counting on Katherine.