100 years ago - 1915 March 19 - Lenora Cohn, 5, is strangled, stabbed and mutilated on a landing in her New York tenement. She had been out fetching a pail of milk for her mother. A tuft of gray hair clutched in her left hand was the only real evidence. In following days, her mother and police began receiving jeering letters threatening more murders. The correspondences ended with the signature, "H.B. RICHMOND, Jack-the Ripper". As per threat, another child murder occurred six weeks later but the slayings then apparently ended leaving the killer uncaptured and unidentified.
This my opinion and to the best of my knowledge, that is, if I'm not joking.