Last year I shared some great stuff over at the Our Word site - a Christmas issue of a community magazine called, appropriately enough, "The Community News." It was published in 1962 in Albert Lea, a town in southern Minnesota. Although it isn't a TV Guide per se, it's one of those typical supermarket magazines that includes the TV listings for the week.
And what's interesting about this issue is not the TV listings - I already had them in a 1962 TV Guide - but the ads. It's as clear an example as you can find about how American culture has changed over the past 40 years.
I linked to part one above; you can read part two here, followed by part three. It would be fun to go down there and see how many of these local businesses are still around, wouldn't it?