Browse Items (1 total) Tags: Decatur Signal Depot Browse All Browse by Tag Search Items Sort by: Title Creator Date Added Photo of Decatur Signal Depot, Aerial View Photograph of the Decatur Signal Depot, Aerial View located on north 22nd Street. See the Herald and Review for more information. Tags: BS1069, Business, Decatur IL., Decatur Signal Depot, Manufacturing Featured Item Above Niagara 1908 Photograph of Niagara Falls from above the falls in 1908.