1956 Map of Black River C-1

About this map

The United States Canada international boundary defines the eastern edge of this 1950s survey, where the Alaskan interior meets the Yukon Territory. This high-altitude landscape is characterized by a complex drainage system that feeds into the Salmon Fork Black River at the bottom of the quadrangle. The topography is anchored by primary survey markers, including VABM 3208 White and VABM 2849 Circle, which served as critical control points for the International Boundary Commission and the Geological Survey. The lack of roads or established trails highlights the isolation of this border region during the mid-twentieth century. Narrow drainages like Tetthajik Creek and Rice Gulch carve through the high ground, illustrating the unpopulated and unmanaged character of the wilderness before modern development reached this far north.