Jack the Ripper reading list question

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.

UBC: Lizzie Borden

Brown, Arnold R. Lizzie Borden: The Legend, the Truth, the Final Chapter. Nashville, TN: Rutledge Hill Press, 1991. [library]

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All things considered, this was probably not the best place to start reading about Lizzie Borden.

( behind the cut, a fairly detailed critique )

I don't know that Arnold Brown is wrong, but he fails utterly to persuade me that he is right. Mostly, he persuades me that he is a man with a hobby horse.

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If Arnold Brown has represented himself correctly, then it is true that he had access to primary sources that were previously unavailable. Does anyone know of any trustworthy books on the Borden murders written after 1991? I'll also gladly take opinions of pre-1991 books and whether any of them are worth pursuing, but if Brown really did have new primary sources, I'd like to know what other scholars have made of them.