1958 Map of McGrath A-1

About this map

The Old Iditarod Trail winds through this interior Alaskan wilderness, following a path through Rainy Pass as it cuts between high peaks in the late 1950s. This survey records a landscape of high alpine crossings and glacial drainages, where the South Fork Kuskokwim River is fed by numerous tributaries including Wolverine Creek and Brush Creek. The terrain is dominated by the Terra Cotta Mountains and the Teocalli Mountains, which channel the flow of the Sheep River and Happy Creek. Several remote water bodies are noted, such as Rainy Pass Lake and Hagen Lake, serving as landmarks in an area defined by mountain passes like Houston Pass and Goodman Pass. The map provides a look at this high-country corridor before modern shifts in accessibility, focusing on the natural geography and historical trail routes.