The Garrison Papers
DA Jim Garrison's files, lots of them.
I am late to the party here. Former New Orleans DA Jim Garrison’s files were scanned and released as one massive zip file of 180 PDF files uploaded in 2016. There is a lot to go through here for both researchers and people with an interest in JFK assassination research. This is truly a deep dive so set your time accordingly.
The zip file is 1.9 gigs and the unzipped at just 2 gigs.
https://archive.org/details/GarrisonPapers/Additional%20Thornley%20material/
I also highly recommend Kennedy and King’s “Creating the Oswald Legend: Appendix” by Vasilios Vazakas. It’s a long and detailed look at the cast of characters in the threads of the JFK assassination.
https://www.kennedysandking.com/john-f-kennedy-articles/creating-the-oswald-legend-appendix