I just ran across this video on Archive.org:
During five summers from 1957 to 1961, the five-member Barstow family of Wethersfield, Connecticut, set out to visit all 48 of the then United States of America on a series of month-long camping trips.
In 2000, Father Barstow added narration to the footage and put it all on VHS for our viewing bliss. Good lord, what a video and what a family. I haven't finished the whole thing (it's long) but the intro alone is worth your time.Watch the video after the jump...