found: Work cat.: The Fourmile Wash project, 1992:(Tonopah Desert in western Arizona) p. 1 (Tonopah Desert, a level valley floor dissected by washes; part of Sonoran Desert; in NW Maricopa County; Belmont Mtns. to the north, White Tank Mtns. to the east, Big Horn Mtns. to the west, and Palo Verde Hills to the south)
found: GNIS, Aug. 16, 2005(Tonopah Desert, Arizona; ID #12605; plain; Maricopa County; 33deg. 33min.05sec. - 33 deg. 33min. 40sec. N, 112deg. 51min. 22sec - 113deg. 00min. 41sec. W)
found: Arizona atlas & gaz., c1996:p. 56 (Tonopah Desert; near town of Tonopah)
found: GeoNames [algorithmically matched]plain; 33°33ʹ05ʺN 112°56ʹ49ʺW