Enid Blyton eighth book in the Adventure series, "The River of Adventure", and her seventh Secret Seven novel, "Secret Seven Win Through". She completed the sixth and final book of the Malory Towers series, "Last Term at Malory Towers", in 1951. Blyton published several further books featuring the character of Scamp the terrier, following on from "The Adventures of Scamp", a novel she had released in 1943 under the pseudonym of Mary Pollock. "Scamp Goes on Holiday" (1952) and "Scamp and Bimbo", "Scamp at School", "Scamp and Caroline" and "Scamp Goes to the Zoo" (1954) were illustrated by Pierre Probst. She introduced
Enid Blyton story books and the first novel in the Naughtiest Girl series, "The Naughtiest Girl in the School", which followed the exploits of the mischievous schoolgirl Elizabeth Allen at the fictional Whyteleafe School. The first of her six novels in the St. Clare's series, "The Twins at St. Clare's", appeared the following year, featuring the twin sisters Patricia and Isabel O'Sullivan. In 1942 Blyton released the first book in the Mary Mouse series, "Mary Mouse and the Dolls' House", about a mouse exiled from her mousehole who becomes a maid at a dolls' house. Twenty-three books in the series were produced