Author and illustrator of many great children's books, mostly picture books. Born December 10, 1943 in Little Rock, Arkansas, he started publishing in 1967 with the wordless "A Boy, A Dog, and A Frog" and since then has published over 300 books, according to the brief bio of Mayer on (I think that includes other people's works that he's illustrated, too.) The best known and most popular are those published by Golden Publishing featuring Little Critter and his family, but there are a lot more (including the one I most fondly remember from my childhood, "Professor Wormbog in Search of the Zipperump-a-Zoo."