| 1 | NMSX | National Malleable and Steel Castings Co. —temporary expiring 15Oct61 | 4/1961 | | NAKINA |
| 2 | NMSX | National Malleable and Steel Castings Co. —temporary expiring 10Jan58 | 10/1957 | | NAKINA |
| 3 | NMSX | National Malleable and Steel Castings Co. —temporary expiring 10Dec54 | 7/1954 | | NAKINA |
| 4 | NMSX | National Malleable and Steel Castings Co. -- temporary expiring 10Jan58 | Oct-57 | | NRHS |
| 5 | NMSX | National Malleable and Steel Castings Co. -- temporary expiring 15Oct61 | Apr-61 | | NRHS |
| 6 | NMSX | *NATIONAL MALLEABLE & STEEL CASTINGS CO. (TEMPORARY ASSIGNMENT EXPIRING OCT. 1961) | | | PWRC |
| 7 | NMSX | +NEW MEXICO STEAM LOCOMOTIVE & RAILROAD HISTORICAL SOCIETY | | | PWRC |
| 8 | NMSX | New Mexico Steam Locomotive and Railroad Historical Society | | | RSRV |
| 9 | NMSX | NEW MEXICO STEAM LOCOMOTIVE AND RAI | | | SCAC4 |
