Railroad Archives Online
- ArquivoD0027 - Timothy Miller Collection
- Série004 - Northern Pacific Railroad Company
- Subsérie009 - Engineering Records
- 008 - Physical plant drawing
- 002 - Depots and Freighthouses
- 499 mais...
- ItemStruc005232 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1959
- ItemStruc005233 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1959
- ItemStruc005234 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1958
- ItemStruc005235 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1956
- ItemStruc005236 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1958
- ItemStruc005237 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1964
- ItemStruc005238 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1963
- ItemStruc005239 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1967
- ItemStruc005240 - Northern Pacific Engineering Drawing, Yard Office at Yardley, Washington, 1957
- 1154 mais...