Ann Mathews Martin was born on August 12, 1955 in Princeton, New Jersey. She received a degree in elementary education and psychology from Smith College. She worked as a teacher, was an editor of children's books for both Bantam and Scholastic, and then became a full-time writer. She is the author of several series including the Baby-sitters Club series, Baby-Sitters Little Sister series, California Diaries series, and Main Street series. Her other works include Ten Kids No Pets, Here Today, On Christmas Eve, and Rain Reign.
Raina Telgemeier attended the School of Visual Arts, in New York City, as an Illustration and Cartooning student. She received her BFA in 2002. Raina is the adapter and illustrator of four Baby-sitters Club graphic novels, the co-author of X-Men: Misfits, which made the New York Times' Graphic Books Bestseller List, and the author and illustrator of Smile, which was recently named an Honor Book in the Boston Globe-Horn Book Awards. Her other work includes Ghosts, Drama, and Sisters