From the Re-envisioning Washington D.C. series… Union Station, Washington D.C. then and now. Archival digitized negative source: Library of Congress Prints and Photographs Division Washington, D.C. 20540 Call# LC-B2- 2497-4
The archival (right portion) of this shot is from 1912 showing workers preparing for a Columbus Day Celebration. Other photographs of the event on Flickr show crowds enjoying a parade and speeches. The statue by Lorado Z. Taft and fountain by Daniel Burnham were new at the time of the photo.