This is a photo of a copy of a letter that the Ripper wrote to Scotland Yard. This letter, among others, can be pulled out of sleeves of a book that I have on the Ripper, entitled Jack The Ripper: The Casebook.
If you are having a hard time reading it, this is what it says:
I take great pleasure
In giving you my present whereabouts for the benefit of the Scotland Yard Boys. I am very
sorry that I did not have time to finish my work with the London whores”?” for a short while. I am now safe in New York and will travel next”?” to Philadelphia and when I have the lay of the locality-I might take a notion to do a little ripping there. Good bye. dear friend & I will let you here from me before long with a little more cutting and ripping. I said so and I fancy I will make it 40 on account of the slight delay in operations
This letter, to me, shows that he was planning to kill people in America. Ripper-like murders happened in New York and Philadelphia, later on.