From the earliest critiques of the Warren Report (see, for instance, Meagher, Accessories after the Fact), but especially after Harold Weisberg obtained through the FOIA a transcript of the closed-door Warren Commission session discussing Oswald’s potential role as intelligence agent, the claim he was an FBI informant has repeatedly surfaced. DiEugenio builds a strong case for Warren DeBrueys as Oswald’s FBI handler in New Orleans. The FBI destroyed the files on Orestes Pena, witness to one of their meetings, just prior to the creation of the HSCA. It was DeBrueys that Oswald asked to see after his arrest following the leafleting incident. William Walter found an informant file on Oswald with DeBrueys’ name on it. DeBrueys most certainly knew of Oswald’s association with Banister before the assassination.