Browse Items (11 total) Tags: E. Main St. Browse All Browse by Tag Search Items Previous Page of 2 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 Previous Page of 2 Featured Item Photograph of Maroa-Forsyth High School Building Photograph of Maroa-Forsyth High School, Maroa, IL.