Railroad Archives Online
- CollectionD0197 - Maple Valley Historical Society Collection
- Series009 - Logging Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- ItemP1986.43.01-019 - Baldridge Logging Company steam locomotive number 3 at Maple Valley, Washington in 1936.
- ItemP1988.12.03-024 - Wood and Iverson Logging Company steam locomotive number 3 at Hobart, Washington in 1912.