MARGERY WILLIAMS was born in London in 1881 and first came to the United States at the age of nine. For the rest of her life, she lived alternately in England and America. Her first novel was published when she was twenty-one, but she turned to writing for children in 1922 with the publication by Doubleday of The Velveteen Rabbit, the best-known of her thirty books for young people. Toward the end of her life, she lived in Greenwich Village in New York City. She died there in 1944.  WILLIAM NICHOLSON was born in Newark-on-Trent, England, in 1872. He illustrated several books during his lifetime, including the children's classic The Velveteen Rabbit, and was also a renowned portrait painter. Many of his portraits and still lifes hang today in museums and galleries throughout England. He was knighted in 1936, and died in 1949.