Alco S-7, S-10, S11, S12 & S-13 (Built by MLW only) | 
| - | 
Info supplied by R. Craig | 
| Original owner | 
Road Numbers | 
Qty. | 
Bldr Numbers | 
Bldr Dates | 
| Alco S-7 | 
| Alco S-5 Roster
 |  
 | 
| -
 | Photograph from:  John Mech Collection   | 
| Canadian National | 
8206-8213 | 
 8 | 
81658-81675 | 
6-10/57 | 
| 8214-8225 | 
12 | 
82081-82092 | 
10-11/57 | 
| 8226-8234 | 
9 | 
82118-82126 | 
10-11/57 | 
| Alco S-10 | 
| Alco S-6 Roster 
 |  
 | 
| -
 | Photograph from:  
 | 
| Canadian Pacific | 
6601-6602 | 
 2 | 
82279-82280 | 
1/58 | 
| 6603-6611 | 
9 | 
82408-82416 | 
1-2/58 | 
| 6612-6613 | 
2 | 
82417-82418 | 
10-11/57 | 
| Alco S-11 | 
| Alco S-11 Roster
 |  
 | 
| -
 | Photograph by:  John Kuehl 
 | 
| Canadian Pacific | 
6614-6615 | 
 2 | 
82419-82420 | 
6/59 | 
| 6616-6623 | 
8 | 
82558-82565 | 
6-7/59 | 
| Alco S-12 | 
| Alco S-12 Roster
 |  
 | 
| -
 | Photograph by:  John Kuehl 
 | 
| Canadian National | 
8235 | 
 1 | 
82127 | 
5/58 | 
| 8236-8245 | 
10 | 
82259-82268 | 
5-8/58 | 
| Alco S-13 | 
| Alco S-13 Roster
 |  
 | 
| -
 | Photograph by:  John Kuehl 
 | 
| Asbestos & Danville | 
50 | 
 1 | 
83214 | 
9/62 | 
| Canadian International Paper | 
24-065 | 
 1 | 
83215 | 
2/63 | 
| Canadian National | 
8500-8506 | 
 7 | 
82552-82557 | 
1-2/59 | 
| 8507-8520 | 
14 | 
82594-82607 | 
5-8/58 | 
| 8521-8522 | 
2 | 
83139-83140 | 
6/59 | 
| 8600-8603 | 
4 | 
83141-83144 | 
10/59 | 
| 8604-8613 | 
10 | 
83172-83181 | 
10/59 | 
| 8614-8625 | 
12 | 
83202-83213 | 
10/59 | 
| Marathon Corporation | 
28-120 | 
 1 | 
83216/M3435-01 | 
3/66 | 
| Pacific Great Eastern | 
1001-1003 | 
 3 | 
82548-82550 | 
1/59 | 
| Spruce Falls Paper & Pulp | 
108 | 
 1 | 
M3483-1 | 
7/67 | 
| Source of information: Extra 2200 South and The Diesel Builders by John F. Kirkland |