New York Railways' Broadway Battleship double deck streetcar.
https://s3-us-west-1.amazonaws.com/h..._streetcar.jpg
Previously:
https://www.homemadetools.net/forum/...472#post151101
https://www.homemadetools.net/forum/...971#post133866
https://www.homemadetools.net/forum/...607#post132631