Because of the Thanksgiving holiday, our picks here at DCist look a little slim this week. Fear not, the authors will return to our city next week with more books they think you should buy as holiday gifts. In the meantime, enjoy and be thankful for your pie. MONDAY: Mr. The Greatest Generation, Tom Brokaw, is back to give us another “epic portrait” of a defining era in U.S. history, this time the 1960s in…