1950 Map of Gulkana C-4

About this map

Gulkana River and its meandering tributaries dominate this interior landscape, captured during a period of photogrammetric mapping by the U.S. Geological Survey. The settlement of Sourdough serves as a lone outpost of development along the eastern edge, situated where the Sourdough Creek meets the main river channel. This area illustrates the critical role of early road infrastructure in the Alaskan wilderness, as the Richardson Highway provides the primary north-south transit corridor through the Copper River Basin.