Railroad Archives Online
- FondD0288 - Terence Wahl Collection
- Sorozat002 - Chicago, Milwaukee, St. Paul, and Pacific Railroad Company
- Alsorozat014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 006 - Cabooses (Railroads)
- IratdarabTRWahl0021 - Milwaukee Road Caboose, Bellingham, Washington, August 1952
- IratdarabTRWahl0259 - Milwaukee Road Caboose 01384, Bellingham, Washington, undated
- IratdarabTRWahl0260 - Milwaukee Road Caboose 01384, Bellingham, Washington, undated
- IratdarabTRWahl0398 - Milwaukee Road Caboose 01609, Bellingham, Washington, undated
- IratdarabTRWahl0399 - Milwaukee Road Caboose 01609, Bellingham, Washington, undated
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