William J. Quinn
He was Chief during the Jessie Scott Hughes murder trial of Frank Egan and the 1934 San Francisco General Strike on the waterfront where he took a rock to the head , and during the period of the investigations by Edwin Atherton who published the Atherton Report on police graft and corruption . 
<triplet> 1934 San Francisco General Strike <subj> 1934 <obj> point in time