I had never even heard of Mary Blair before, but a quick Google Image Search of her work was astonishing. I realise I have virtually grown up seeing her style of illustration everywhere, thanks to Walt Disney. I guess when you grow up exposed to a certain style of art, it becomes so familiar that it never even registers at a conscious level. I never thought to wonder about the person behind these illustrations.
I guess we either hear of "serious" artists or of cartoonists, but illustrators seem to be unsung heroes.