Railroad Archives Online
- CollectionE0357 - Wade J Stevenson Collection
- Series010 - Other Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad Tracks
- Subseries Level 3001 - Railroad Mainline
- ItemGNRHS.55.22.15 - Nevada County Narrow Gauge Railroad Museum O'Malley Spur Switch at Nevada City, California, undated