Thanks to Jonathan Calder for pointing me at this set of incredible images from the USA. They are from the period of the tail end of the Great Depression through to the height of World War Two.
The quality of the images is amazing. All seem to have used Kodak slide film and so the colours are not what we are used to nowadays but are all the more stunning for it. I've pinched my favourites shot to accompany this post, but I urge you to have a look through the whole lot.