Railroad Archives Online
- CollectionD0197 - Maple Valley Historical Society Collection
- Series004 - Pacific Coast Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3004 - Railroads--Maintenance and repair
- ItemP2002.01.01-038 - Pacific Coast Railroad servicing facilities at Maple Valley, Washington, circa 1935.