Surficial geologic maps of the Tucson metropolitan area [Avra, Brown Mountain, Cat Mountain, Jaynes, Marana, Mt. Lemmon, Oro Valley, Ruelas Canyon, Sabino Canyon, Tucson, Tucson East, and Tucson North 7.5 min]

McKittrick, M.A., 1988, Surficial geologic maps of the Tucson metropolitan area [Avra, Brown Mountain, Cat Mountain, Jaynes, Marana, Mt. Lemmon, Oro Valley, Ruelas Canyon, Sabino Canyon, Tucson, Tucson East, and Tucson North 7.5 min]: Arizona Geological Survey Open-File Report 88-18, 6 p., 12 sheets, scale 1:24,000.