Huckleberry, Gary, 1993, Surficial geology of the Superstition Mountain piedmont area, northern Pinal and eastern Maricopa Counties, Arizona [Goldfield, Weavers Needle, Florence Junction, Superstition Mts. SW, Florence NE, Magma 7.5 min]: Arizona Geological Survey Open-File Report 93-15, 33 p., 6 sheets, scale 1:24,000.