1935 Map of Irwin

About this map

Snake River flows through the heart of this mid-1930s landscape, winding past the Grand Canyon of the Snake River before reaching the settlement of Irwin. This era was defined by a river-and-forest economy, evidenced by operations like Weeks Sawmill and the presence of numerous specialized outposts including the Swan Valley Ranger Sta and Brockman Ranger Sta. The map captures the remote settlement patterns along the Idaho-Wyoming border, where transit relied on points like Edwards Ferry and the early reaches of State Highway No 22.