Dated 17 September 1888, this letter was only recently discovered by Peter McClelland in a sealed report envelope in the British Public Record Office in 1988. It's authenticity is hotly debated, many believing it to be a recent hoax placed surreptitiously in the records. It was first published in Paul Feldman's Jack the Ripper: The Final Chapter.
So now they say I am a Yid when will they lern Dear old Boss! You an me know the truth dont we. Lusk can look forever hell never find me but I am rite under his nose all the time. I watch them looking for me an it gives me fits ha ha I love my work an I shant stop until I get buckled and even then watch out for your old pal Jacky.
Catch me if you Can Jack the Ripper
Sorry about the blood still messy from the last one. What a pretty necklace I gave her."