NURE Aerial Gamma Ray and Magnetic Reconnaissance Survey, Southeastern Area, Alaska: Volume 2. Bradfield Canal Quadrangle, report, January 1979; (https://digital.library.unt.edu/ark:/67531/metadc958427/m1/1/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .