The Central and Eastern Oregon Township Plats consist of reproductions of the original manuscript plat maps for townships in regions of Oregon east of the Cascade Mountains. Most of the plats were prepared in the 1870s-1890s.
The Oregon State Park Sites and Timber Reserves Maps consist of maps of park sites acquired for the State of Oregon by the Oregon State Highway Commission. The collection also includes maps of land acquired for the Blue Mountain and Wallowa Timber Reserves in northeastern Oregon. The maps depict road right of ways, property lines, legal descriptions, streams, design parameters, and property corners.