Railroad Archives Online
- ArquivoD0011 - James M. Fredrickson Collection
- Série002 - Chicago, Milwaukee, St. Paul, and Pacific Railroad Company
- Subsérie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 004 - Railroad Passenger Cars
- ItemJMF12-05911.0 - Chicago, Milwaukee, St. Paul & Pacific Railroad Company observation car in 1941.
- ItemJMF12-05913.0 - Chicago, Milwaukee, St. Paul & Pacific Railroad Company observation car in 1941.
- ItemJMF12-05914.0 - Chicago, Milwaukee, St. Paul & Pacific Railroad Company observation car in 1941.
- ItemJMF12-06090.0 - Chicago, Milwaukee, St. Paul & Pacific Railroad Company baggage car number 6969 at Portland, Oregon, undated.
- ItemJMF12-06091.0 - Chicago, Milwaukee, St. Paul & Pacific Railroad Company passenger train, undated.
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