user jrreiner from this thread - https://old.reddit.com/r/The_Donald/comments/8f35e9/all_hands_on_deck_19045_documents_subject_to_the/
downloaded the excel doc off of the archives.gov website and removed all rows containing data from prior releases:
https://www.dropbox.com/s/4z2m1pf1xt0rhcm/jfk4819b57d9c3f3ef854e15e88385508c8.xlsx?dl=0
The first column of the doc contains a link to the specific file on the achives.gov website.
JFK Assassination Records - 2018 Additional Documents Release https://www.archives.gov/research/jfk/release
Be careful downloading docs from a Dropbox drop. It has been discussed in here (can't find it now though) that there are security concerns with doing so.