Warren Hinckle was the editor of Ramparts Magazine, a fairly popular left-wing magazine from 194 to 1969. He wrote a really fun book, about the 1960s, called If You Have a Lemon, Make Lemonade. He devotes one chapter, "Give Us This Day Our Daily Paranoia," to the conspiracy theorists of the JFK assassination. His book is worth buying just for that chapter. Here is an excerpt about Jim Garrison: My last communication with Garrison was on November 5, 1968. It was not untypical. I was interrupted in mid-explanation to an unhappy investor (Keating's stormy departure had not helped the money-raising situation). The investor was turning a tinge yellow at my suggestion that the only way to insure the return of the $20,000 he had previously loaned