that was doug waller talking on his new book, "wild bill donovan." he's going to join us on our set now, and if you'd like to talk with him, here's the numbers. you can send mr. waller an e-mail at booktv@c-span doirk or tweet twitter.com/booktv, and our handle is @booktv. following the call in, another will be here writing in year's pulitzer prize winning general non-fiction book, "the emperor of al mallties, the biography of cancer." and then we'll return to the history and biography tent in an hour or so for christie miller who wrote a book on the two wives who served as first lady during the woodrow wilson administration. we'll conclude today from the national book festival with the prize winning author, david mccolluogh taking phone calls and tweets as well. that's the final segment today at five to six o'clock eastern time. national book festival weekend here on booktv, but as we showed you all weekend, it is also charlotte weekend on booktv. he's another look at the literary life of charlotte, north carolina. >> online, you have online sales?