Railroad Archives Online
- FondD0288 - Terence Wahl Collection
- Sorozat003 - Great Northern Railway Company (U.S.)
- Alsorozat014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 005 - Maintenance of Way cars
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- IratdarabTRWahl0534 - Great Northern Scale Test Car, Bellingham, Washington, undated
- IratdarabTRWahl0577 - Great Northern Maintenance of Way Car 05303, South Bellingham, Washington, undated
- IratdarabTRWahl0578 - Great Northern Tool Car 06062, South Bellingham, Washington, undated
- IratdarabTRWahl0579 - Great Northern Tool Car 02661, South Bellingham, Washington, undated
- IratdarabTRWahl0605 - Great Northern Crane X1796, Bellingham, Washington, undated
- IratdarabTRWahl0625 - Great Northern Detector Car R-3, Bellingham, Washington, undated
- IratdarabTRWahl0630 - Great Northern Maintenance of Way Car 03284, Bellingham, Washington, undated
- IratdarabTRWahl0631 - Great Northern Maintenance of Way Car 03284, Bellingham, Washington, undated
- IratdarabTRWahl0632 - Great Northern Maintenance of Way Car 03284, Bellingham, Washington, undated
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