Browse Items (1 total) Tags: Substation Construction Browse All Browse by Tag Search Items Sort by: Title Creator Date Added Photos Illinois Power Co. Photographs of Illinois Power Substation and Building. Tags: Decatur IL. Noel C. Dick, E. Main St., Illinois Power Co., Office Building, Power Company, Substation Construction Featured Item Plan for Library Development in Illinois March 1964 Plan for Library Development in Illinois March 1964