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 3003 - Maintenance Facilities
- 1180 more...
- ItemBB031179 - Northern Pacific Engineering Drawing: Shop Plan - Rail Clip, 135 Foot Turntable, undated
- ItemBB031180 - Northern Pacific Engineering Drawing: Shop Plan - Rim Beams, 135 Foot Turntable, undated
- ItemBB031181 - Northern Pacific Engineering Drawing: Shop Plan - Operating Machinery, 135 Foot Turntable, undated
- ItemBB031182 - Northern Pacific Engineering Drawing: Shop Plan - Center Casting, 135 Foot Turntable, undated
- ItemBB031183 - Northern Pacific Engineering Drawing: Shop Plan - Twin Span, 135 Foot Turntable, undated
- ItemBB031184 - Northern Pacific Engineering Drawing: Shop Plan - Bronze Disk, 135 Foot Turntable, undated
- ItemBB031185 - Northern Pacific Engineering Drawing: Shop Plan - Bronze Disk, 135 Foot Turntable, undated
- ItemBB031186 - Northern Pacific Engineering Drawing: Shop Plan - Pivot Casting, 135 Foot Turntable, undated
- ItemBB031187 - Northern Pacific Engineering Drawing: Shop Plan - Pin and Bolt, 135 Foot Turntable, undated
- 122 more...