Barbara Barbieri McGrath has written over twenty books for children, including The Little Gray Bunny, The Little Red Elf, The Little Green Witch, and many bestselling math concept books. Her love for writing, children and making learning fun was the inspiration for her first children's book, The M&M Brand Counting Book, which sold over 1 million copies. She lives in Natick, Massachusetts.
Tim Nihoff is the illustrator of Otter Everywhere (Candlewick). He is also a graphic designer and sculptor who creates toys, furniture, and other "fun fine art" from found objects. Tim lives and works on a small island in Maine.