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
- 339 more...
- ItemStruc002770 - Northern Pacific Engineering Drawing, Metal Building (Butler), undated
- ItemStruc002771 - Northern Pacific Engineering Drawing, Metal Building (Butler), 1929
- ItemStruc002772 - Northern Pacific Engineering Drawing, Metal Building (Butler), 1929
- ItemStruc002773 - Northern Pacific Engineering Drawing, Metal Building (Butler), 1929
- ItemStruc004739 - Northern Pacific Engineering Drawing, Roundhouse and Machine Shop at Lewiston, Idaho, 1914
- ItemStruc004740 - Northern Pacific Engineering Drawing, Roundhouse and Machine Shop at Lewiston, Idaho, 1914
- ItemStruc004741 - Northern Pacific Engineering Drawing, Roundhouse and Machine Shop at Lewiston, Idaho, 1914
- ItemStruc004742 - Northern Pacific Engineering Drawing, Roundhouse and Machine Shop at Lewiston, Idaho, 1911
- ItemStruc004743 - Northern Pacific Engineering Drawing, Roundhouse and Machine Shop at Lewiston, Idaho, 1912
- 963 more...