Arizona (Pinal County), Ray and vicinity /
Geological Survey (U.S.)
Marshall, R. B.
Gerdine, T. G.
Beaman, W. M.
Bannon, T. M.
Winsor, Thomas.
[Washington, D.C.] : The Survey,
1912.
Relief shown by contours, hachures, and spot heights.
Contour interval 25 feet. Datum is mean sea level.
"Surveyed in 1910."
"Engraved Nov. 1911 by U.S.G.S."
Mining activities shown.
Mines and mineral resources