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
- 7 more...
- ItemStruc000011 - Northern Pacific Engineering Drawing, Wastewater Treatment Facility at Auburn, Washington, 1977
- ItemStruc000012 - Northern Pacific Engineering Drawing, Wastewater Treatment Facility at Auburn, Washington, 1978
- ItemStruc000013 - Northern Pacific Engineering Drawing, Wastewater Treatment Facility at Auburn, Washington, 1977
- ItemStruc000014 - Northern Pacific Engineering Drawing, Wastewater Treatment Facility at Auburn, Washington, 1977
- ItemStruc000015 - Northern Pacific Engineering Drawing, Wastewater Treatment Facility at Auburn, Washington, 1977
- ItemStruc000020 - Northern Pacific Engineering Drawing, Wastewater Treatment Facility at Auburn, Washington, 1978
- ItemStruc000021 - Northern Pacific Engineering Drawing, Wastewater Treatment Facility at Auburn, Washington, 1977
- ItemStruc000022 - Northern Pacific Engineering Drawing, Wastewater Treatment Facility at Auburn, Washington, 1978
- ItemStruc000040 - Northern Pacific Engineering Drawing, Unnamed Structure at Pasco, Washington, undated
- 1295 more...