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| ![[M&SC 504]](images/msc504.jpg) | 
| MONTREAL & SOUTHERN COUNTIES 504 MCGILL STREET TERMINAL DOWNTOWN MONTREAL | 
| Express motor 504 was built in 1924 by the Ottawa Car Company. It is of wood construction sitting on Taylor trucks and is 49 ft. 8 ins. long. Retired in 1956, it is now preserved at the Seashore Trolley Museum in Kennebunkport, ME, USA. |