david is a professor at nyu s department of history and director of the division of humanities at the nyu school in madison. in 2009 he won a pulitzer prize in history for his portfolio, an american story. a conspiracy so immense, and worse than slavery. professor oshinsky is for broaderwriting audiences. his works have appeared, his articles have appeared in the new york times and the wall street journal, and it is a privilege for me to welcome him here at the tenement museum. [applause] david oshinsky: i think this does work. can you will hear me? first what i would like to do is get the pulitzer thing out of the way. everybody asks the question. so i won for a book on polio. the pulitzer is the only price where they do not announce the finalist. the national book award, there were eight finalists, we eat at the same table. one wins, the others make like they are happy for them. kind of like the oscars. for this one, they announced the finalist, which is unusual. but to mak