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
- 205 more...
- ItemGNValuationMap0206 - Great Northern Plat Map, Okanagan, Washington. Milepost 90-93, undated
- ItemGNValuationMap0207 - Great Northern Plat Map, Okanagan, Washington. Milepost 92, undated
- ItemGNValuationMap0208 - Great Northern Plat Map, Okanagan, Washington. Easement at Okanogan, 1959
- ItemGNValuationMap0209 - Great Northern Plat Map, Omak, Washington. Milepost 94-97, undated
- ItemGNValuationMap0210 - Great Northern Plat Map, Omak, Washington, Omak Number 1. Milepost 96, undated
- ItemGNValuationMap0211 - Great Northern Plat Map, Omak, Washington, Omak Spur, undated
- ItemGNValuationMap0212 - Great Northern Plat Map, Omak, Washington, Easement at Omak, 1957
- ItemGNValuationMap0213 - Great Northern Plat Map, Cherokee, Washington. Milepost 98-101, undated
- ItemGNValuationMap0214 - Great Northern Plat Map, Riverside, Washington. Milepost 102-106, undated
- 35 more...