The Worst Witch
"The Worst Witch" () was first published in 1974 by Allison & Busby, who took the book on after it had been turned down by three other publishers.
The Worst Witch
"A Bad Spell for the Worst Witch" () was published in 1982. It features Ethel Hallow's little sister, Sybil Hallow, and her friend Clarice Crow.