6 October 1888 -- this letter was received by newspaper publisher Arthur Weaversbrook.
This is just the only known example of letters ostensibly sent by 'Jack the Ripper' to terrify the gentlemen of the press, like Mr. Weaversbrook, into printing stories that would spread the Ripper's Terror.
"You thought your-self very clever I reckon when you informed the police.
But you made a mistake if you though I dident see you.
Now I known you know me and I see your little game, and I mean to finish you
and send your ears to your wife if you show this to the police or help them if you do
I will finish you. It no use your trying to get out of my way. Because I have you
when you don't expect it and I keep my word as you soon see and rip you up.
Jack the Ripper.
PS You see I know your address"