Railroad Archives Online
- FondosD0288 - Terence Wahl Collection
- Series004 - Northern Pacific Railroad Company
- Sub-series014 - Photographs
- 003 - Railroads--Buildings and Structures
- 002 - Depots and Freighthouses
- ItemTRWahl0014 - Northern Pacific Freight House, Bellingham, Washington, August 1952
- ItemTRWahl0620 - Northern Pacific Freight House, Bellingham, Washington, undated
- ItemTRWahl0621 - Northern Pacific Freight House, Bellingham, Washington, undated
- ItemTRWahl1086 - Northern Pacific Freight Depot, Bellingham, Washington, undated