on Publishing … and Other forms of Insanity:
There are dozens of children’s book publishers that do not require an agent, which means children’s book authors generally find it easier to break into publishing than those who write adult fiction and nonfiction. This holds true for juveniles of all ages, from birth to young adult.
Picture books are geared to children ages 3 – 8. Lengths can vary from 500 to a thousand words. In most cases, the author provides the text, while publishers arrange for an illustrator. (An exception is made for author-illustrators.) Rarely do publishers take on both a writer and an illustrator.