Description
The front of this photograph states, "National Lock Co. Addition. Security Building Co. Contractors, Rockford. Weiss and Niestadt Architects, Chicago. Work started March 1, 1925. Picture taken 4/24/25." The plant's main structure at 7th St. and 18th Ave., with its water tower and clock tower, are visible in the background (right). This photo is mounted on heavy mat cardboard.