civilization ii, and that has to do with the 19th century running all the way from tocqueville to william graham sumner and others. i do graduate classes that relate mainly to 20th century african-american history, often in an urban focus n an urban context. and this year i'm preparing to put together a class on approaching american popular culture from the standpoint of its industrial structures. so how do markets begin to emerge in relation to the music industry from the copyright act of 1909 to the reemergence of new platforms of disseminating music in the '70s and '80s. how does the movie industry move from its consolidation within the studio system to its disintegration and reconditioning around different finance structures and so on and so forth. so it's really, it's a wonderful, wonderful opportunity and a great treat to be able to teach to these fine students in this university. >> and we've been talking with professor adam green of the university of chicago. here's his book, "selling the race: culture, community and black chicago 1940 to 1955." >> visit booktv.org to watch any of the programs