Jack the Ripper reading list question

[truepenny]

If a person has read Donald Rumbelow's book on Jack the Ripper (variously published as The Complete Jack the Ripper and Jack the Ripper: The Complete Casebook), are there any other nonfiction Jack the Ripper books that one ought to read? I.e., has anything substantially new been said since Rumbelow? (And should I bother with anything pre-Rumbelow?)

Please note, I'm not asking what books about Jack the Ripper have been published since 1975; I can find that out for myself. I'm asking for recommendations about which, if any of them, to read.

Comments

[truepenny.livejournal.com]

Yes. I need to bite the bullet and buy From Hell.

[swan-tower.livejournal.com]

I wasn't all that fond of the actual comic, but much of that was for personal-mileage reasons. Certainly Moore did his research. (It's worth getting the version that has his annotations at the back, if your interest is at all scholarly; he extensively footnotes where he got all of his details from.)