The geology of, and known mineral occurrences within, Wilderness Study Area 4-1A, Needle's Eye - Mescal Mountains

Calder, S.R., 1982, The geology of, and known mineral occurrences within, Wilderness Study Area 4-1A, Needle's Eye - Mescal Mountains: Arizona Bureau of Geology and Mineral Technology Open-File Report 83-11, 63 p.