http://playboy.covertocover.com/ is quite cool (requires Silverlight) - it allows you to look through selected Playboy magazines from the 50s onwards. It's quite interesting to see how packed full of adverts the magazines were (and still are) - endless sequences of beer, whiskey, cigarette, motorbike, car, etc. adverts.
It's also interesting to see how sexist advertising was - Queen Mary whiskey is billed as "not for ladies", I guess implying that bunnies will be happy to drink it.
There also seems to be a surge in ads for malt liquor in the late 60's. Country Club makes it clear that they will get you drunk twice as fast as if you drink beer, with none of that pesky head or carbonation to get in the way.
Hours of fun! :)