Railroad Archives Online
- FondD0027 - Timothy Miller Collection
- Sorozat004 - Northern Pacific Railroad Company
- Alsorozat009 - Engineering Records
- 008 - Physical plant drawing
- 003 - Maintenance Facilities
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- IratdarabStruc002705 - Northern Pacific Engineering Drawing, Roundhouse, Frame 125 Foot at Yakima, Washington, 1962
- IratdarabStruc002706 - Northern Pacific Engineering Drawing, Roundhouse, Frame 125 Foot at Yakima, Washington, 1962
- IratdarabStruc002707 - Northern Pacific Engineering Drawing, Roundhouse, Frame 125 Foot at Yakima, Washington, 1962
- IratdarabStruc002708 - Northern Pacific Engineering Drawing, Roundhouse, Frame 125 Foot at Yakima, Washington, 1962
- IratdarabStruc002769 - Northern Pacific Engineering Drawing, Metal Building (Butler), 1929
- IratdarabStruc002770 - Northern Pacific Engineering Drawing, Metal Building (Butler), undated
- IratdarabStruc002771 - Northern Pacific Engineering Drawing, Metal Building (Butler), 1929
- IratdarabStruc002772 - Northern Pacific Engineering Drawing, Metal Building (Butler), 1929
- IratdarabStruc002773 - Northern Pacific Engineering Drawing, Metal Building (Butler), 1929
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