It was Enid Blyton’s Fives books for me. Also her Secret Mountain/Island etc. books. However when I was in hospital having my tonsils out at age 4 I was bought a very very highly coloured book about a fox and it frightened me to death!! I’ve never forgotten how I felt but I can’t remember the name of the book. That would have been in about 1948. ??
Feeling organised and planning
