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
- 749 more...
- ItemStruc006789 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1937
- ItemStruc006790 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1942
- ItemStruc006791 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1943
- ItemStruc006792 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1943
- ItemStruc006793 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1943
- ItemStruc006794 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1945
- ItemStruc006795 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1951
- ItemStruc006796 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1952
- ItemStruc006797 - Northern Pacific Engineering Drawing, Roundhouse at Parkwater, Washington, 1952
- 553 more...