Interesting large format map of Oregon, hand colored by counties. Several of the counties east of the Cascades now appear, including Baker, Union, Umatilla, Grant, Jackson and Wasco. In the eastern part of the state, Mahta, Orodel, La Grande, Mitchell's Station, El Dorado, Humboldt Basin, Rye Valley, Express Ranch Auburn, Baker City, Forest Cove, Union,and Bakertown are all named east of the Blue Mountains, as is Canyon City, Pendleton, Causo, Marshall and Meadowville to the west, many being holdovers , from the gold discoveries of the early 1860s. A number of towns appear along the Columbia. The rail lines of the Oregon - California RR from Portland to Oakland (north of Roseburgh) are shown. Post offices are alos located. One of the most interesting large format commercial maps of Oregon of the early 1870s.