Historical Idaho State Maps

Idaho Territory - Mitchell 1881 - 23 x 31.12
Oregon Washington Idaho Montana - Mitchell 1870 - 23 x 28.09
United States Northwest - Petermann 1872 - 23 x 27.37
Missouri Oregon Trail - Preuss 1846 - 23 x 35.82
Missouri Oregon Trail - Preuss 1846 - 23 x 36.25
Missouri Oregon Trail - Preuss 1846 - 23 x 34.56