Immense separately published map of Oregon, the largest map we have encountered by JK Gill.
Later and larger version of Gill's 1880's maps of Oregon. Counties are hand colored still! Very good detail, showing the township and range lines, National Forests, Indian Reservations, and railways. Only a few areas in the southeast and in the mountains remain unsurveyed. Full color by county. . .
The map is an extraordinary production. This is the only example we have ever seen on the market.