Date: May 1974 Location: Washington, D.C. Source: Jim Pickerell photo for the Environmental Protection Agency, via Library of Congress What do you see here?
Date: January 1969 Location: Government Center, Boston, Massachusetts Source: Boston Redevelopment Authority, via City of Boston Archives on Flickr What do you see here?
Date: 1960s Location: Oak Ridge, Tennessee Source: Frank Hoffman ( above ) and Ed Westcott ( below ), via the Department of Energy on Flickr What do you see here?