Reply #5: They may not be forgeries but they are discredited

[Lucille]

If you take Burkett at his word, he destroyed the originals and submitted copies. The copies cannot be authenticated. You cannot analyze paper and ink, or make a definitive judgments about the signature.

Furthermore, Burkett did not have the ability to authenticate the originals. He doesn't even know who gave them to him.

And he admits he lied about other crucial aspects of the memos.