Built in 1914 , 23 Wall Street was known as the " House of Morgan " , and for decades the bank 's headquarters was the most important address in American finance . At noon , on September 16 , 1920 , a terrorist bomb exploded in front of the bank , injuring 400 and killing 38 . Shortly before the bomb went off , a warning note was placed in a mailbox at the corner of Cedar Street and Broadway . The warning read : " Remember we will not tolerate any longer . Free the political prisoners or it will be sure death for all of you . American Anarchists Fighters . " While there are many hypotheses regarding who was behind the bombing and why they did it , after 20 years of investigation the FBI rendered the case inactive without ever finding the perpetrators
terrorist bomb exploded in front of the bank
Wall Street bombing
JPMorgan Chase