The CIA were particularly interested in Americans at RBI, particularly those involved with the Ops Outpost Station programmes.
They made lots of recordings held in the US National Archives. The names mentioned that I could find - George Lohr, Jerry Randall, Linda Cooper, Barbara Moreley, Bob Reid, Allan Ladd, George Fox, Bob Ross, Bob Amsterdam, Red Pierce, Jonaton Curtis, Kerru Randall, Bert Pierce, Willi Hermann, Bill Cassidy, Bert Grimms, Dick Larson, and Bob Rees.
It looks like the CIA recorded just aout everything it could in the early 60s.