Hal Hendrix was a journalist who had ties with the CIA. Exactly what those ties were seems to be debated. There are many CIA documents that mention him on the Mary Ferrell Foundation site.
John Simkin, referencing speculation from Larry Hancock, thinks Hendrix was given the code name AM/Carbon-1. Joan Mellon references Hendrix in her book on Jim Garrison, "A Farewell to Justice," calling Hendrix a CIA media asset. He certainly seemed to be exactly that.
However, Hal Hendrix was not AM/Carbon-1 according to the CIA AM crypts on the Mary Ferrell site. It gives TWO RIF numbers, 104-10072-10289 and 104-10308-10135 which will get you TWO CIA documents. However, neither document actually comes right out and says, yes, Hal Hendrix was AM/Carbon-1. But, that's not a problem
The first one I looked at was 104-10072-10289. It has been badly copied as you can see text on the left hand side has been cut off. This represents only the loss of a letter or two and you can make out the words but it's annoying. This continues on another page where two letters are cut off.
Anyway, on the bottom of one page of the document they give the details of AM/Carbon-1's journalistic career.
Now, if you went to the AARC conference, or if you saw the video on C-SPAN, you learned that the CIA will try to fragment people and give them multiple false names, code names, etc., in cables, but they will often mention a specific action, event, or something from the history of a specific individual as THE CLUE that although a guy may be called Moe in one document, Larry in another, Curley in yet another, and finally Shemp, the fact that a key biographical piece of information is given with every document and every name when you can collect and read many, many examples of this you can DEFRAGMENT all of this and see that it is really one guy being talked about.
So, AM/Carbon-1 began his career at a location, probably the Miami Herald, in 1957 working at the City Desk. He rose through the ranks to cover major political developments in the Miami area. In 1962 people notice the guy. He does not yet have knowledge and experience as a Latin American specialist but it seems he wants to be one. Certain specific actions are mentioned as well as dates for certain specific articles in Miami newspapers. If checked out this should determine who
104-10072-10289 is a very interesting document. This document uses the false name "Reuteman," who is really CIA station chief Ted Shackley. AM/Carbon-2 introduced AM/Carbon-1 to"Reuteman."
The whole reason the CIA sought out Miami media elites was to nix any bad publicity about any CIA operations which were going on in the area.
The CIA already had AM/Carbon-2 in their pocket, but they want to get AM/Carbon-1. Hendrix seems to be the one who wanted to be and was a Latin American specialist. So, I'm thinking Larry Hancock is right and the info on the Mary Ferrell site is incorrect.