Favorite Documentaries from 1930-70s

I love looking at them comparatively, just look I can't wait to see what they say about this decade 30 years from now (if I'm still here).. Doesn't matter the country, either - I love to get as many different ones as possible.

-Place De la Republique
-Chronicles of a Summer
-Seven-Up
-Salesman
-Le Joli Mai