1956 Map of Black River C-1

About this map

The Alaska Yukon border defines the eastern edge of this 1950s survey, marking the international line where the United States Canada boundary cuts through the interior wilderness. The landscape is dominated by the complex drainage systems of the Salmon Fork Black River, which winds across the southern reaches of the sheet. Survey control points like VABM 3208 White and VABM 2849 Circle indicate the primary high points used by the U.S. Geological Survey and the International Boundary Commission to triangulate this remote terrain. Tributaries such as Tetthajik Creek and Rice Gulch carve through the uplands, illustrating the hydrologic patterns of the region before any modern infrastructure reached these latitudes. This map represents a purely topographical study of the Alaskan interior, focused on precise boundary demarcation and watercourse mapping.