Media organisations and the police received many letters and postcards purportedly written by the killer, who was dubbed "Jack the Ripper" after one of the signatories.
当时，媒体与警署均收到了许多自称凶手者所寄的信与明信片，凶手的绰号“开膛手杰克”（Jack the Ripper）也来源于其中一封信的书名。