So square they're cool - stamps from 1974 celebrating Canada Post (Postes Canada).
"Matchbox labels from around the world but the majority are Eastern European from the 1950s and 60s."
Posters, Brochures, Stamps, Playing Cards, Matchboxes
Logo Styleguide
Also see http://wemadethis.typepad.com/we_made_this/montreal-olympics-1976.html
A little collection I've put together of graphically rich retro stamps - see it here http://www.flickr.com/photos/kathykavan/galleries/72157623433662355/