Holly Keller has illustrated a number of books in the Lets-Read-and-Find-Out Science series, including Be a Friend to Trees. She is also the author and illustrator of many picture books, including Island Baby and Horace.

Ms. Keller lives in West Redding, Connecticut.

Holly Keller has illustrated a number of books in the Lets-Read-and-Find-Out Science series, including Be a Friend to Trees. She is also the author and illustrator of many picture books, including Island Baby and Horace.

Ms. Keller lives in West Redding, Connecticut.