Janesville Aerial View. Janesville Main Street. 5" x 3 1/2" black and white postcard photograph of main street Janesville before the fire of 1887; a view of Main Street looking north; many wood buildings line the dirt street; Lake Elysian can be seen in the background before it was dammed up. Janesville Birdseye view. Janesville Bird's eye view. Janesville aerial view.