Actually, it might help if I posted the article. Apologies
"Jack the Ripper" at Greenwich
On Tuesday morning, some writing in chalk was found on the large gate in the rear of the Ordnance Arms public house, Lewisham road.
The following were the words. "October 14, 88. Murder. Dear Boss, if you want to find the head of the body found on Embankment, it is in a sack on the water. I have done another (this word was indistinctly written and might have been 'nothing') tonight. Jack the Ripper. Revenge"
There was a rude drawing of a dagger at the commencement of the writing.
On the discovery of the writing becoming known, a large crowd assembled. A policeman was sent up from Blackheath road to watch the place and see that the writing was not obliterated until it had been photographed, which was done later on the same day by Inspector Castle.
I don't known if this was just a precaution after the outcry over the erasing of the GSG, or had any genuine evidentiary value.
I incline to the former, and a hoax. Still, I wonder where the photograph is?
All the best.