I never even heard of Blyton until I was an adult on the interwebs. I don't think her books are/were really that common in the US. Did you read them here or in India? I did read quite a few other British children's books (someone above mentioned E. Nesbit), but don't remember ever seeing Blyton on the shelves and I just checked the Santa Monica library website now and all they've got are three from this series of hers.