Railroad Archives Online
- Unità documentariaE0482 - Great Northern Railway-Northern Pacific Railroad Enhanced Drawing Collection
- Serie004 - Northern Pacific Railroad Company
- Sottoserie012 - Cartographic materials
- 001 - Railroads - Right of Way
- Unità documentariaMT-NP-ML-A-19A-6-StR-Par-MP217-MP218-RevD-102512M - Enhanced Northern Pacific Right of Way and Track Map between Paradise, Montana and Saint Regis, Montana, undated.
- Unità documentariaMT-NP-ML-RW-DeS-Par-MP61-MP64-RevD-102512 - Enhanced Northern Pacific Right of Way and Track Map between Paradise, Montana and De Smet, Montana, undated.
- Unità documentariaMT-NP-ML-RW-DeS-Par-MP63-MP64-MP2-RevC-102212 - Enhanced Northern Pacific Right of Way and Track Map between Paradise, Montana, undated.