Railroad Archives Online
- CollectionD0324 - Washington State Archives Railroad Valuation Map Deposit
- Series10 - Great Northern Railway Company (U.S.)
- Subseries Level 112 - Cartographic materials
- Subseries Level 22 - Plats
- 101 more...
- ItemGNValuationMap0102 - Great Northern Plat Map, Trinidad, Washington. Milepost 1623-1626, undated
- ItemGNValuationMap0103 - Great Northern Plat Map, Douglas County, Washington. Milepost 1627-1629, undated
- ItemGNValuationMap0104 - Great Northern Plat Map, Trinidad, Washington. Milepost 1627, undated
- ItemGNValuationMap0105 - Great Northern Plat Map, Vulcan, Washington. Milepost 1630-1632, undated
- ItemGNValuationMap0106 - Great Northern Plat Map, Columbia River, Washington. Milepost 1633-1635, undated
- ItemGNValuationMap0107 - Great Northern Plat Map, Columbia River, Washington. Milepost 1635, undated
- ItemGNValuationMap0108 - Great Northern Plat Map, Voltage to Rock Island, Washington. Milepost 1638, 1935
- ItemGNValuationMap0109 - Great Northern Plat Map, Voltage, Washington. Milepost 1638, 1962
- ItemGNValuationMap0110 - Great Northern Plat Map, Voltage, Washington. Milepost 1636-1639, undated
- 139 more...