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 lifelong favourite of Gillian's and spawned the Secret series. The following year Blyton released her first book in the Circus series and her initial book in the Amelia Jane series, "Naughty Amelia Jane!" According to Gillian the main character was based on a large handmade doll given to her by her mother on her third birthday. During the 1940s Blyton became a prolific author, her success enhanced by her "marketing, publicity and branding that was far ahead of its time". In 1940 Blyton published two books – "Three Boys and a Circus" and "Children of Kidillin" – under the pseudonym