Nation. Heidi ewing talked about detroit. A andaron woolf on Corn Production in the u. S. This president s day on the cspan networks, on cspan at 10 00 a. M. Eastern to prove that leadership is our challenge in 1992, and that is why i announce my candidacy for president of the United States of america. [applause] a special presentation on Campaign Announcements from Ronald Reagan in 1979 to barack obama in 2007. We will reenter the announcements later in the evening at 9 00 p. M. On book tv. Finalist for the book circle Critics Award starting at medical eastern. David brion davis on his third and final volume on the history of slavery, focusing on emancipation. At 1130, Elizabeth Kolbert argues we are undergoing a sixth as extension. And that senator Elizabeth Moran talked wealth and economic inequality on American History tv at 8 00 eastern. Cartoonist Patrick Oliphant draws residential candidates. At 7 00 eastern, a 1960 nbc interview with Herbert Hoover discussing his life be on the