20,000 members of the Building Employers Union enlist as Air Raid Wardens in Chicago.
Titles read: "WARDENS' MASS ENLISTMENT" (Dublin issue).
Chicago, Illinois, United States of America.
In a large hall we see 20,000 members of the Building Employers Union enlisting as Air Raid Wardens at the same time. The Mayor of Chicago administers the Oath of Office and the large crowd responds, holding up their hands (oath is not heard).