Off the top of my head I strongly recommend the two titles below. They’ve been out a while now, but highly recommended for anyone yet to encounter them.
THE FALSIFICATION OF HISTORY.
by John Hamer
John was a guest on Gareths “Bring The Fire” recently and has also contributed other work to Ickonic. Most notably “The Olympic”, an excellent dive (pardon the pun) into the Titanic conspiracy.
This book addresses the vast amounts of fakery and misinformation concerning accepted human history. Touching on many themes and theories that David explored, this is essential, revelatory reading.
CHAOS: Charles Manson, the CIA, and the Secret History of the Sixties.
by Tom O’Neill and Dan Piepenbring.
Never mind the awful, savagely edited Netflix adaptation of this book. This is a compelling record of mind control and media manipulation surrounding the darker side of the counter culture movement of the 1960s. Again dealing with topics David has explored, this completely shreds the mass consumed Helter Skelter explanation behind the Manson Family and their atrocities, revealing all manner of nefarious intelligence agency activity and coercion.