Yes, I've seen it three times! When I taught school I used to take my students to Chicago on a three day field trip. We did the Sci and Ind. museum, Field Museum, Art Institute, the Sears Tower, and several other points of interest!
I had never heard of it, but saw it while looking through some 1949 Hobbies magazines. They said the reason there are no dolls in it, is everyone has a different idea of a prince and princeses, so they were left to the imagination.