
Clark Fork serves as the focal point of this 1951 survey, situated along the Northern Pacific railroad as it follows the path of the massive Clark Fork river. This era captures a landscape of intense resource extraction and early hydroelectric development, evidenced by the cluster of active and inactive workings such as the Whitedelf Mine, Hope Mine, and the Lawrence Mine. The map highlights a significant pending geographical change, with blue hatching indicating the area soon to be submerged by the completion of Albeni Falls Dam, including portions of the river valley near Derr Island.
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4 editions found
8 maps found