1932 Map of Irwin
USGS Topo · Published 1932About this map
Grand Valley and Conant Valley define this landscape along the Snake River before the construction of modern dams. Surveyed in the early 1930s, the map reveals a network of isolated rural settlements and administrative outposts like Swan Valley, Irwin, and the Snake River Ranger Station. Travel through this mountainous terrain was facilitated by the State Highway and river crossings such as Edwards Ferry. Education for the valley's families was provided by small local institutions including Swan Valley Sch and Granite Creek Sch. Further south, the high-altitude marshes of Gray Lake and the Caribou Basin dominate, showing the Grays Lake Ranger Sta and remote settlements like Herman. This survey documents a critical period of land management within the Targhee National Forest and the Caribou Basin.
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Editions of this 1932 Irwin Map
2 editions found
