This just in from my good Serbian friend Sasa:

[I recently returned from Budapest, where we stmbled accross the little known museum of Trade and Tourism. It was really a nice collection of regular products for everyday use, mostly from the early 20th Century (when it was fun). I was excited to see a selection of completelly preserved samples of sox! One of them has a label with a motif of Three Little Pigs, obviously from the '30s. I was sure that it would interest you.]