Wall Street bombing The aftermath of the explosion (Federal Hall National Memorial is at the right) Location Manhattan, New York City Coordinates 40°42′25″N 74°00′37″W﻿ / ﻿40.7070°N 74.0103°W﻿ / 40.7070; -74.0103Coordinates: 40°42′25″N 74°00′37″W﻿ / ﻿40.7070°N 74.0103°W﻿ / 40.7070; -74.0103 Date September 16, 1920 12:02 pm (local time) Target Wall Street Attack type Horse-drawn wagon bomb Animal-borne bomb attack Deaths 40[1] Injured 143 serious, several hundred total Motive Possible revenge for the arrests of Sacco and Vanzetti and/or the deportation of Luigi Galleani