1950 Map of Jefferson Island

About this map

The Jefferson River corridor serves as the primary conduit for transport and industry in this 1950s survey of southwestern Montana. Two major railroads, the Northern Pacific and the Chicago Milwaukee St Paul and Pacific, parallel the water through a landscape defined by ranching and mineral extraction. Notable landmarks include the Lewis and Clark Cavern State Park and the settlement of Cardwell. To the south, the London Hills rise above a series of family-owned tracts such as the Lamb Ranch and Brenner Ranch.