The Oregon Central Military Road Map depicts a portion of the Oregon Central Military Road as surveyed in July-September 1865. The hand-drawn manuscript map depicts the daily progress of the survey party, which was accompanied by a U.S. Army cavalry escort. Major geographic and natural features along the route are shown on the map, including the Middle Fork of the Willamette, Deschutes, and Williamson Rivers; Klamath Marsh, Fort Klamath, Klamath Lake, and Lower Klamath Lake; the Lakes Basin including Goose, Summer, and Abert Lakes; and Diamond Peak, Beatys Butte, and Steens Mountain. The route of the wagon road crossed through the Klamath Reservation. The map has an approximate scale of 1 inch = 15 miles or about 1:1,000,000. The map is approximately 17 x 22 inches and is backed with linen.
The creator of the map is not identified.