Railroad Archives Online
- CollectionD0197 - Maple Valley Historical Society Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2002 - Railroad Employees
- ItemP2015.06.15-050 - Burlington Northern Railroad employees at Maple Valley, Washington in 1980.
- P2015.06.52-073 - Burlington Northern Railroad dispatcher Don Vernor at Maple Valley, Washington in 1977.