I ran across
this interesting fellow, of whom I'd never heard, while searching the Library of Congress American Memory site for a project at work.
There's a huge collection of his work
here, most or all of which was done for the FSA or the War Department which means there's no copyright which makes them fair game for our nefarious purposes.
Here's one image that really caught my eye. There are large (
very - as in 100-meg-plus) TIF files as well as sorta-medium-res jpgs like this one. Some, like this one, were 4x5 transparencies (which may account for the stiffness I noticed in a lot of them) and some were slides.
He's no Dorothea Lange but it's a pretty impressive body of work, I'd say.