http://memory.loc.gov/ammem/fsachtml/fsowhome.html
I don't know if anyone here has seen this link yet, but the Library of Congress has some amazing color photos of the Depression-WW2 era up online. You can even download the huge uncompressed TIFF files. It really brings home the realism when pictures are in color, far more so than black & white can ever do (for me at least). There are lots of pictures of the industries & workers of the era.. they look just like us for the most part. I know that shouldn't seem surprising but it is for some reason.
This is one of my favorites so far - reminds me of my grandpappy.