Here`s one of them, BB
This was reported in the Echo, 8th Sept 1888:
THE "WRITING ON THE WALL"
It is currently reported in Hanbury-street that this morning the following paragraph, written in chalk, was seen upon the wall of one of the back gardens there, and four persons distinctly stated they had actually seen the writing. The words are, "I have now done three, and intend to do nine more and give myself up, and at the same time give my reasons for doing the murders." Whether there is any truth in the matter remains to be seen.
The Star 8th Sept report of the supposed graffiti;
"The woman living next door declared that this morning there was written on the door of No. 29, "This is the fourth, I will murder sixteen more and then give myself up." There was no basis for this story, however, there being no chalk mark on the door except "29.""
“The Pall Mall Gazette charges that the words ‘I have murdered four and will murder sixteen more before I surrender myself to the police,’ written by the supposed Whitechapel murderer upon a shutter of a house adjoining the one in the yard of which the body of one of his victims was found, were erased by order of Sir Charles Warren, chief of the London police force, before the authorities had the opportunity to photograph them.”
The American newspapers (of 12 October 1888) which reported the story said to be from the Pall Mall Gazette stated that their report had come from "London, 11th Oct". But the surviving edition of the Pall Mall Gazette of 11 October 1888 carries this report:
"A very strange, startling rumour as to the manner in which Sir Charles Warren performs the duty of Chief Detective of Scotland-yard is current this morning in the City. Those who repeat it assert that is will be verified at the inquest which is now proceeding and a report of which will be continued in succeeding editions. The rumour in question is to the effect that rather than face the danger of allowing a crowd to assemble in a public thoroughfare Sir Charles Warren deliberately destroyed a clue - the only clue which the City Police believed to afford any guidance as to the identity of the assassin.
The facts as alleged are as follows. The murderer, after killing his victim in Mitre-square, just within the City boundary, seems to have gone down Goulston-street, which is outside the City boundary, and under the jurisdiction of Sir Charles Warren. Here he threw away a portion of the murdered woman's apron after wiping his hands. On the wall in close proximity to the place where the bloody apron was found, there was written up the following inscription:-
"The Jews shall not be blamed for nothing."
This inscription was subsequently erased, it was supposed by some stupid blunder.
It is now stated that the erasure was made by the express orders of Sir Charles Warren, who personally superintended the operation!"