Railroad Archives Online
- CollectionD0197 - Maple Valley Historical Society Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad tracks
- Subseries Level 3001 - Railroad mainline
- ItemP2015.06.02-045 - Burlington Northern Railroad mainline at Cedar Grove, Washington, in June 1981.
- ItemP2015.06.04-046 - Burlington Northern Railroad mainline at Cedar Grove, Washington, in June 1981.
- ItemP2015.06.16-051 - Burlington Northern Railroad railroad track at Maple Valley, Washington in 1981.
- ItemP2015.06.28-062 - Burlington Northern Railroad railroad track at Cedar Grove, Washington in 1981.
- ItemP2015.06.29-063 - Burlington Northern Railroad railroad track at Indian, Washington, in 1981.
- ItemP2015.06.30-064 - Burlington Northern Railroad mainline at Indian, Washington in 1981.
- ItemP2015.06.33-066 - Burlington Northern Railroad mainline at Renton, Washington in 1991.