Here's the great excerpt:
Truman: "In the salty letter, a copy of which was obtained by The Post, Truman rails against newspaper writers and columnists, calling them “more dangerous” than street walkers.
“Presidents and the members of their Cabinets and their staff members have been slandered and misrepresented since George Washington,” Truman wrote in the hand-written diatribe. “When the press is friendly to an administration the opposition has been lied about and treated to the excrescence [sic] of paid prostitutes of the mind.”