U. S. GEOLOGICAL SURVEY 
BULLETIN NO. 309 PL. VI 
A. FLANKS OF OAK RIDGE AND SANTA SUSANNA MOUNTAINS, SHOWING POST-PLIOCENE 
PENEPLAIN. 
From mouth of Sulphur Canyon; looking oast. 
B. THE UPPER OJAI VALLEY. 
From crest of Sulphur Mountain, Ventura County 
