Railroad Archives Online
- FondoD0288 - Terence Wahl Collection
- Serie004 - Northern Pacific Railroad Company
- Subserie014 - Photographs
- 003 - Railroads--Buildings and Structures
- 003 - Maintenance Facilities
- Unidad documental simpleTRWahl0486 - Northern Pacific Engine House, Bellingham, Washington, undated
- Unidad documental simpleTRWahl0518 - Northern Pacific Engine House, Bellingham, Washington, undated
- Unidad documental simpleTRWahl0568 - Northern Pacific Engine House with Steam Locomotive 1380, Bellingham, Washington, undated
- Unidad documental simpleTRWahl0590 - Northern Pacific Engine House, Bellingham, Washington, undated