Green Shield stamps. My mum bought these in the early 70s, to 'save up' to buy things for our home. I remember seeing books and books of them. (This pin has been repinned almost every day since I first posted it!)
Chip Kidd on Charlotte's Web: This was the first book I read that was really about the power of design and typography. I would say that Charlotte’s typographic web-o-grams represent the first depiction of a successful ad campaign in children’s literature.