The Galleanist group would go on to utilize bomb designs nearly identical to that of the Preparedness Day Bomb in several subsequent bombings during 1918 and 1919 , while Mario Buda was the prime suspect in the later and very similar Wall Street bombing in New York City in 1920 . Additionally , in an apparent oblique reference to an event in February 1916 in which a Galleanist operative in Chicago , Nestor Dondoglio , served poisoned soup to a host of political , religious , and business leaders , San Francisco police recovered two unsigned letters urging the headwaiter at the St. Francis Hotel to serve poisoned soup to Police Commissioner James Woods , one of the organizers of the Preparedness Day march , when Woods next came to dine there
Wall Street bombing
Wall Street bombing
Preparedness Day Bombing