Lattimore was an American author and illustrator born in what was called the American Compound in Shanghai and raised in China where her father, David Lattimore, taught English at a Chinese government university. Lattimore came to the United States and studied art in Oakland, California, Boston, and New York City and worked for several years as a freelance artist. She became known as the author and illustrator of more than fifty popular children's books; her first book, Little Pear, is considered a children's classic.