East London Advertiser
Saturday, 19 October 1889.

Mr. Albert Backhert [Bachert], chairman of the Whitechapel Vigilance Committee, has received the following letter: "Whitechapel, 9th October, 1889. Dear Boss, - I write you these few lines to let you know, as you are the Boss of the Vigilant Society, that the last job wasn't me. You might have known it wasn't me, for I shouldn't have made such a 'botch' of it. Never mind, young man. You can keep your lamps open for the 18th of October. I am on the job again. There's no blood knocking about or I let you see some. Never mind. Look out, old man. Your a brave sort. You thought you had me once. Don't forget the 18th. - Yours in haste, JACK THE R. - Albert Backhert." The envelope bears the East London postmark, and was posted on Saturday. The writing corresponds with that in the letters received by Mr. Backhert previously. The "B" and "R" are a facsimile of those in the two letters that were sent to Mr. Backhert before the Miller's-court and Castle-alley murders, and these two letters turned out to be true. In this instance, however, the letters "J. R." are on the envelope as well as on the address.