Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series010 - Other Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad Tracks
- Subseries Level 3001 - Mainline Photos
- ItemWerkema637 - Lake Whatcom Railway end of track near Park, Washington, in 2008.
- ItemWerkema634 - Spokane, Portland & Seattle Junction in Kennewick, Washington, in 1981.