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
- 271 more...
- ItemBB035859 - Northern Pacific Engineering Drawing: Shop Plan - Circuit Diagram, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035860 - Northern Pacific Engineering Drawing: Shop Plan - Connection Arrangement, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035861 - Northern Pacific Engineering Drawing: Shop Plan - Circuit Diagram, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035862 - Northern Pacific Engineering Drawing: Shop Plan - Interconnection Chart, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035863 - Northern Pacific Engineering Drawing: Shop Plan - Load Cell, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035864 - Northern Pacific Engineering Drawing: Shop Plan - Read Logic, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035865 - Northern Pacific Engineering Drawing: Shop Plan - Keyboard Activator, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035866 - Northern Pacific Engineering Drawing: Shop Plan - Print Drive, Electronic Track Scale, Pasco, Washington, undated
- ItemBB035867 - Northern Pacific Engineering Drawing: Shop Plan - Sequencer, Electronic Track Scale, Pasco, Washington, undated
- 48 more...