we then turn to erikc f who is theoner, to which professor at columbia -- we then turn to eric foner, the dewitt professor at columbia. he has written many classics many awards, a lot of this people in this room i think and learn from "free soil, free labor, free men: reconstruction, the story of american freedom," and the new book coming out with norton. right after this, he just told me, you can go to a book signing upstairs in the book exhibit. he is also someone who appears in the areas places, in the media, television, "the colbert report," he has posted up as in newspapers, magazines, and he consults with very is institutions doing public history. we will go to peniel joseph, who is a professor of history attest university and i think one of the i was happy he could participate in this. he's the author of a very good new book that received a lot of attention, and he has become a regular commentator in the national press am a publishing in "new york times" and "washington post." you will see him weighing in on issues in a very serious, smart fashion. we once got on -- in an argum