Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3007 - Track
- 293 more...
- ItemBB035881 - Northern Pacific Engineering Drawing: Shop Plan - Monochrome Display, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035882 - Northern Pacific Engineering Drawing: Shop Plan - Keyboard Drawing, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035883 - Northern Pacific Engineering Drawing: Shop Plan - Typical Control Panel, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035884 - Northern Pacific Engineering Drawing: Shop Plan - Wheel Detector, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035885 - Northern Pacific Engineering Drawing: Sequence Operation, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035886 - Northern Pacific Engineering Drawing: Sequence Operation, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035887 - Northern Pacific Engineering Drawing: Shop Plan - Track Scale, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035888 - Northern Pacific Engineering Drawing: Shop Plan - Track Scale, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035889 - Northern Pacific Engineering Drawing: Shop Plan - Track Scale, Electronic Track Scale, Pasco, Washington, undated
- 26 more...