Joan Heilbroner is best known for her first book, Robert the Rose Horse, which was published in 1961. Acquired by Dr. Seuss when he was editor of Beginner Books, it has been in print for more than 50 years. Her inspiration to write A Pet Named Sneaker came from her grandchildren, Quentin and Katrina, and their talented pet snake, Plato. A graduate of Columbia University, Ms. Heilbroner worked as a school librarian until her retirement.

P. D. Eastman was an author and illustrator who created many children’s books, including Are You My Mother?; Go, Dog. Go!; and The Best Nest. Trained at the National Academy of Design, he published his first Beginner Book, Sam and the Firefly, in 1958. Since then, his books have sold more than fifty million copies, and he has become one of the most beloved children’s book authors in the world.