Railroad Archives Online
- FondsD0288 - Terence Wahl Collection
- Cyfres004 - Northern Pacific Railroad Company
- Is-gyfres014 - Photographs
- 003 - Railroads--Buildings and Structures
- 002 - Depots and Freighthouses
- EitemTRWahl0014 - Northern Pacific Freight House, Bellingham, Washington, August 1952
- EitemTRWahl0620 - Northern Pacific Freight House, Bellingham, Washington, undated
- EitemTRWahl0621 - Northern Pacific Freight House, Bellingham, Washington, undated
- EitemTRWahl1086 - Northern Pacific Freight Depot, Bellingham, Washington, undated