Three ads (and three links to great blog entries with further ads):
Full size 800x971 "The Mid-Century Colossus"
Two more below the cut:
Full size: 640x854 "Corporate Identity, Industry & Utility"
not sure how to tag this - can we get an "industry" tag? I have a bunch of these.
Full size: 800x1025, "Comicopia: Realismo Socialista" (Socialist Realism)