. >> "capitol hill cooks" is the name of the book, linda bauer is the author from the white house. congress and all of the past presidents. >> coming up, thomas allen presents a history of torrey americans during the american revolution. the author recounts the torrey strongholds of new york and philadelphia, the civil war that took place among the american populace and the migration of 80,000 tories most of whom left for canada. thomas allen presents his book at the library of congress this in washington d.c. it's 40 minutes. >> i'm not supposed to have to plug the library of congress, but it's inevitable. a few years ago i got a call from an historian at the cia whom i had met when i'd been working on the george washington book about intelligence in the revolutionary war. and he says the library of congress is something you might be interested in, call this number. and i thought, wow. maybe the cia really does that -- [laughter] people who, you know, just like in the seven cays of the con -- days of the condor, there's people reading books all the time. so, well, it wasn't quite that. what had happened was the library had got a manuscript t