From 1954 on, Casterman published children's books as well, including the successful Martine books by Marcel Marlier and Cadet- Rama books written by Alain Gree (units Achille et Bergamote and Petit Tom).
A partir de 1954, Casterman publicou tamén libros para nenos, incluíndo os exitosos libros de Martine de Marcel Marlier e Cadet- Rama escritos por Alain Gree (unidades Achille et Bergamote e Petit Tom).