In a different direction than (I would guess) most of the posts we'll see here: I Remember Townsend... by Lizbeth Marcs.

Edit: This is a strange one to recommend, here - it feels more like a reminiscence and political argument than a textbook - but I do so because it gets at the importance of the truth from an angle which isn't common among us thought nerds. It isn't an instruction manual, it's a rousing speech.