U.S.GEOLOGICAL SURVEY 
CHARLES O.WALCOTT, DIRECTOR 
BULLETIN NO. 309 PL. XIX 
Compiled Prom city engineer’s map and 
county records by Ralph Arnold, 1905. 
^Charts A C °m Pi, |f d W L Walk *r from locations 
y harles A ' Blackman and other sources 
Geologic sections shown on PI.XX and figs. 13.14-, 17 
3 
Faults 
Structural axes 
Contour lines 
showing approximate depth of the first oil sand below 
Los Angeles city datum ^255 feet above sea level). Those 
east of Bonnie Brae street are after W. L. Watts. Bulletin 
No. 19. California State Mining Bureau. Fig. 31 
Oil wells produc¬ 
ing or drilling 
Oil wells not 
pumping 
1906 
AJIOtNkcO Ml.TtM'JNe. 
