Not so much my normal fair for Flickr Friday today.  Instead I'm going to direct you to this link, which has some fantastic photographs from about 30 years of American history (1939 - 1969).  Take a look at each of them and think about life back then.  I suppose if you lived back then, its a bit different than for me who wasn't alive then.  Then think about what people will say about pictures we take today in 40 to 70 years.