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 3006 - Stockyards
- ItemStruc002552 - Northern Pacific Engineering Drawing, Stockyard at Bozeman, Montana, 1963
- ItemStruc002553 - Northern Pacific Engineering Drawing, Stockyard at Bozeman, Montana, 1956
- ItemStruc002554 - Northern Pacific Engineering Drawing, Stockyard at Bozeman, Montana, 1956
- ItemStruc002776 - Northern Pacific Engineering Drawing, Stock Scale, 10 Ton 15 Foot X 22 Foot at Toppenish, Washington, 1967
- ItemStruc002777 - Northern Pacific Engineering Drawing, Stock Scale, 10 Ton 15 Foot X 22 Foot at Toppenish, Washington, 1967
- ItemStruc002778 - Northern Pacific Engineering Drawing, Stock Scale, 10 Ton 15 Foot X 22 Foot at Toppenish, Washington, 1967