Railroad Archives Online
- ArkivD0288 - Terence Wahl Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Underserie014 - Photographs
- 004 - Railroad tracks
- 003 - Railroad yards
- ObjektTRWahl0236 - Great Northern Freight Yard, Bellingham, Washington, undated
- ObjektTRWahl0571 - Great Northern Track, Bellingham, Washington, undated
- ObjektTRWahl0617 - Great Northern Freight Yard, Bellingham, Washington, undated
- ObjektTRWahl1073 - Great Northern Freight Yard, Bellingham, Washington, undated