1930's and 40's color pics

Pics of a cross section of America in the late depression era. There are some railroad pics half way down the page. The detail, contrast and subject matter are excellent, enjoy:
http://extras.denverpost.com/archive/captured.html

Look at the size of this yard! caption: Switchman throwing a switch at Chicago and Northwest Railway Company's Proviso yard. Chicago, Illinois, April 1943. Reproduction from color slide. Photo by Jack Delano. Prints and Photographs Division, Library of Congress

great stuff. that Denver post collection is getting alot of notice.

When I read the thread title I thought of the Jack Delano collection on Shorpy.com
http://www.shorpy.com/jack-delano-photos

incidentally, quite a few of his subjects were in the Chicago area.