You are likely thinking of E. Nesbit, whose full name was Edith Nesbit, a very famous author of children's literature. She wrote numerous books, including:
* The Five Children and It (1902)
* The Railway Children (1906)
* The Story of the Treasure Seekers (1899)
* The Wouldbegoods (1901)
* The Amulet (1906)
* The Enchanted Castle (1907)
* Harding's Luck (1906)
* The Magic City (1910)
If you are interested in learning more about E. Nesbit and her works, you can search for her name on the internet or at your local library.