Does Section 3500 of the Criminal Code require the disclosure of prior statements of a witness?

We observe at the outset that the purpose of 3500 is to provide the defense with prior statements of the witness for the purpose of impeaching the latter's testimony by demonstrating either "[f]lat contradiction between the witness' testimony and the version of the events given in his reports" or "[t]he omission from the reports of facts related at the trial, or a contrast in emphasis upon the same facts, even a different order of treatment." Jencks v. United States, 353 U.S. 657, 667 (1957). Whether a particular prior

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