Geologic Map of the Tillotson Peak 7 1/2' Quadrangle and part of the Mount Ajo 7 1/2 Quadrangle, Organ Pipe Cactus National Monument, Pima County, Arizona v.2
Authors
Pearthree, P.A.
Youberg, A.M.
Young, J.J.
Arizona Geological Survey DGM-73, one map sheet, 1:24,000 map scale
