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

[oursin.livejournal.com]

What scholarship? Historians don't know whether to laugh or cry over her 'research' methodology, which appears to have been 'pick a likely culprit and then find evidence that [supposedly] proves his guilt' - a practice which in the average crime novel is usually applied by official forces anxious to clear up a case and eventually revealed to be in major error by the protag.