Copper River Native Places: A report on culturally important places to Alaska Native tribes in Southcentral Alaska. US Department of the Interior Bureau of Land Management technical report 56, December 2005. This report has five sections: sections 1 through 4 have discussions of sources of information on Ahtna, Eyak and Tlingit territorial knowledge and culturally-important areas that are of relevance to the recognized tribes that are proximate to the East Alaska Resource Management Plan (RMP).