David A. Adler was born in New York City. He attended Queen's College in New York City and later, earned an MBA in Marketing from New York University. He writes both fiction and non-fiction. He is the author of Cam Jansen mysteries and the Andy Russell titles. His titles has earned him numerous awards including a Sydney Taylor Book Award for his title "The Number on My Grandfather's Arm," "A Picture Book of Jewish Holidays" was named a Notable Book of 1981 by the American Library Association and "Our Golda" was named a Carter G. Woodson Award Honor Book.
John Wallner has illustrated many titles in David A. Adler's Picture Book Biography series. He lives in Maine.
Alexandra Wallner has written and illustrated children's picture-book biographies of famous writers, artists, and historical figures, focusing on their childhoods. Her books have received such honors as Teacher's Choice, Outstanding Book in the Field of Science, the Philadelphia Children's Reading Round Table Book of the Month, and the Pennsylvania Library Association Carolyn W. Field Honor Award. She lives in Mexico.