By coincidence I was just finishing The Cultural Cold War and near the end of the last chapter Burnham was mentioned in a side note (it immediately rang a bell after reading Chung's particle : )). Obviously there were few strands of CIA's anti-commie ideological operations. Btw Nabokov, Koestler and Muggeridge etc., were in the other (operation). When this latter operation was outed, Koestler committed suicide.
The first part of Chung's particle is here:
I read The Island when I was trotting around Chitral many moons ago as a 16 year old and it stayed with me : ). And yes, not to forget The Doors of Perception:
Btw I sussed the conclusion to our last discussion but need time to get back into analysing the vid point by point to illustrate my findings.