A while back I picked up these Golden Book Illustrated Dictionaries from a used book sale. The covers are illustrated by Harry McNaught and various artists did the inside work. McNaught also illustrated a number of Sesame Street books and Wizard of Oz books in the Little Golden style.
When I was a kid I read a LOT. I don't think I ever actually read the whole dictionary but I did read through a set of children's encyclopedias that we had at one point. Back then our school library and city library did not have a ton of selection- nowadays there is just so much out there for kids and young adults to read. My 7-year-old has the wonderful problem of having too many books that she wants to get through. We buy a lot of books for her, and she visits the school library every week as well as the city library once in a while, although not as often as we did when she was not in school full-time yet. She's really hooked on the Geronimo Stilton series lately. One of these days I should count up all the children's books we have in our house.