The First Nations Collection of the Southern Oregon Digital Archives consists of documents, books, and articles relating to the indigenous peoples of this bioregion. SODA has begun to collect and mount materials about many tribes in southwestern Oregon and northern California. Some of these nations include the Coos, Hupa, Karuk, Klamath, Modoc, Takelma, Shasta, Siuslaw,Cow Creek Band of Umpqua, Yahooskin, and Yurok nations.
Over the past 30 years the Southern Oregon University Library has actively collected hundreds of federal and state government publications relating to the Southern Oregon Klamath-Siskiyou bioregion. Along with those publications we receive through the U.S. Government Printing Office and the Oregon State Library, SODA has made special efforts to collect "fugitive" and "gray" documents, those materials not normally distributed through these channels. Many are written by researchers that are not regular staff members of the state or federal government, but who contract with regional government offices to do environmental research.