Tatanka Historical Associates. National Register of Historic Places Registration Form(PDF). www.coloradohistory-oahp.org. Colorado Historical Society Office of Archeology & Historic Preservation. February 25, 2005 [2009-02-04]. (原始内容(PDF)存档于2010-07-15).
Tatanka Historical Associates. National Register of Historic Places Registration Form(PDF). www.coloradohistory-oahp.org. Colorado Historical Society Office of Archeology & Historic Preservation. February 25, 2005 [2009-02-04]. (原始内容(PDF)存档于2010-07-15).