MP DRS-4-4-1500 Locos:
This page is dedicated to MP's fleet of Baldwin DRS-4-4-1500 roadswitchers. The MP was the original owner of 4 DRS-4-4-1500 units. They were sublettered for MP subsidiary St. Louis, Brownsville & Mexico.
Original Orders:
| Orig. road numbers | model | Baldwin serial no. | build date | notes |
| MP 4112-4113 | DRS-4-4-1500 | 73647-73648 | 2/1949 | sublettered StLB&M |
| MP 4114-4115 | DRS-4-4-1500 | 73649-73650 | 3/1949 | sublettered StLB&M |
DRS-4-4-1500: MP 4112* 73647 2/1949 MP 4113* 73648 2/1949 MP 4114* 73649 3/1949 MP 4115* 73650 3/1949 * sublettered StLB&M