But Brinkley said he is more optimistic about the purpose of publishing the letters.
"You really do see in a clear, candid, moving fashion how deeply the war affected him," Brinkley said.
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Hyland views Gore's emotional turmoil somewhat differently.
"I remember going down to the Dunster House Grille late at night," Hyland said. "He'd be there watching the ballgame. I had a sense that he spent the '60s watching the ballgame."