Bill Martin Jr. was an American author known for his contributions to children's literature. Born on March 20, 1916, he wrote over 300 books, many of which have become classics. His most famous work, Brown Bear, Brown Bear, What Do You See?, illustrated by Eric Carle, is celebrated for its rhythmic text and colorful illustrations, making it a favorite among young readers. In addition to being an author, Martin was also an educator and a professor. He dedicated much of his life to promoting literacy and the importance of reading in early childhood. His works often emphasize themes of nature and friendship, helping to foster a love of reading in children.