What's really nifty is that Corbis is marking this anniversary with a whole site dedicated to photos from the era. Love the blurb from the site:
The half-built edifice on which they precariously balance is the RCA
building, tallest of 14 art deco skyscrapers in the complex. When the image was
first published, New York was undergoing an Indian summer and Wall Street was at
its lowest level, with unemployment at 24%.