Warren Knox Billings ( July 4 , 1893 – September 4 , 1972 ) was a labor leader and political activist , who was convicted with Thomas Mooney of the San Francisco Preparedness Day Bombing of 1916 . It is believed that the two were wrongly convicted of a crime they did not commit . Billings served 23 years in prison before being released in 1939 and finally being pardoned in 1961 by governor Edmund G. Brown
Preparedness Day Bombing
Preparedness Day Bombing
Warren K Billings