California (Los Angeles County) Mt. Wilson quadrangle /
Ecklund, C. A.
Van Zandt, Franklin K.,1903-
Geological Survey (U.S.)
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey,
1939.
Relief shown by contours and spot heights.
Contour interval 25 feet.
Surveyed in 1933-1934.
Text and ill. on verso.