BLYTON, Enid (author). Burgess SHARROCKS (illustrator). Fun For The Secret Seven. Leicester; Brockhampton Press. 1963.
8vo. Original blue patterned linson boards, pictorial decorative endpapers, in pictorial dustwrapper; pp. [viii], 9-120; illustrated throughout in line; externally and internally clean and crisp with the "Book belongs to" panel uncompleted, protected by a clean and bright, price-clipped dustwrapper with tiny nicking to head of spine and corners.
First edition. The fifteenth, and final, title in the series, and rather elusive. This title was reissued in America in 1972 as The Secret Seven and The Case of the Old Horse.