Railroad Archives Online
- FondoD0063 - Walter W. Ainsworth Collection
- Serie001 - Burlington Northern Railroad Company
- Sottoserie014 - Photographs
- 004 - Railroad tracks
- 001 - Railroad mainline
- Unità documentariaWWAPC0307 - Burlington Northern Santa Fe Railway track at Seattle, Washington, in 1998.
- Unità documentariaWWAPC0334 - Pacific Coast Railroad mainline at Seattle, Washington, circa 1975.
- Unità documentariaWWAPC0684 - Former Burlington Northern mainline at Maple Valley, Washington, circa 1985.
- Unità documentariaWWAPC0734 - Burlington Northern Santa Fe Railroad track at Seattle, Washington, circa 2005.
- Unità documentariaWWAPC0735 - Burlington Northern Santa Fe Railroad track at Seattle, Washington, circa 2005.
- 14 in più...