Scarce 1934 separate map of the Columbia River Basin, evidently produced by the Portland, Oregon Commission of Public Docks, to inform some constituencies about the towns on rail or water routes that fed into the Columbia River.
The map goes as far east as Great Falls, Montana in the east. In the west, it reaches the Pacific. In the north, it extends just into Canada. In the south, it touches the tops of California, Nevada, and Utah.
The map has an almost fantasy-map quality to it, with all of the mountains rendered pictorially as individual peaks.