||U. S. Steel South Works worker punching timeclock
||Worker punching card in room full of timecards and timeclocks, c1917
||1382; http://www.pullman-museum.org/cgi-bin/pvm/mainRecordDisplayXML.pl?recordid=10158; 81-51-17a
||The Industrial Heritage Archives provides reproductions of items from its collections for personal or research use. If an image is to be reproduced in any type of publication or on the web, written permission is required and use fees may be assessed.
||Southeast Chicago Historical Society