Union Pacific Railroad Company (Spokane International) Rolling Stock Photographic Roster
Reporting Marks: SI Old Name: Spokane Internatinal Cars Numbered 919900 - 919999
AAR Class:
MWB: Ballast Cars. All descriptions of cars used for the purpose of carrying ballast for the laying of new right of way and repairs. The car used generally for this work is of the gondola type, with side or center dump.
