An English-American author, primarily of popular children's books. A professional writer since the age of nineteen, she achieved lasting fame at forty-one with the 1922 publication of the classic that is her best-known work, The Velveteen Rabbit (1922).

The Velveteen Rabbit was Williams' first children's book. It has been awarded the IRA/CBC Children's Choice award. Based on a 2007 online poll, the National Education Association named the book one of its "Teachers' Top 100 Books for Children."

It chronicles the story of a stuffed rabbit and his desire to become real, through the love of his owner.