Half-a-dozen 2017 releases of long-secret documents about the assassination of President John F. Kennedy have given plenty of new leads to those who don't believe alleged gunman Lee Harvey Oswald acted alone. The 34,963 documents ... have fed the fire tended by researchers and others who believe there is much more to the story how a U.S. president was assassinated in Dallas 54 years ago. One particular document from the August release has created much buzz. It that shows that Earle Cabell, mayor of Dallas at the time of the Nov. 22, 1963, shooting, became a CIA asset in late 1956. Another revelatory JFK document released in full on Dec. 15 was the transcript of a 1978 interview by the House Select Committee on Assassinations with Orest Pena. According to Pena, a bar owner in New Orleans, Lee Harvey Oswald was a U.S. government agent or informant. How did he know? Because Pena himself was an informant. He had given details to the Warren Commission in July 1964 but, as the new document shows, later revealed much more detail about Warren de Brueys, an FBI agent in New Orleans to whom Pena said he reported. Oswald, he claimed, frequented a breakfast place regularly not only with de Brueys but with agents from U.S. Customs and Immigration. Pena believed Oswald had an office in the same government complex. Pena also testified to the House panel that de Brueys had threatened him if he shared with investigators details of their meetings and training of anti-Castro instigators.