- Explorations of the highlands of the Brazil; with a full account of the gold and diamond mines. Also, canoeing down 1500 miles of the great river São Francisco, from Sabará to the sea. By Captain Richard F. Burton, F.R.G.S. etc. Vol II.
- Buckhorn Wilderness (wilderness.net)
Located in the northeast corner of Olympic National Forest, just to the north of The Brothers Wilderness, Buckhorn Wilderness stands divided into northern and southern portions by the Dungeness River and a parallel road.