. >> no, francis larsen has done a history of severed head, how they've been severed and also whose collected them, with his men throughout history. she does it so seriously from how they were used for relation purposes, she shows us how great poets have their heads preserved, but she does it chronologically this fascinating study. i was shocked that i would be personally drawn to a history of severed heads. but she tells us about a part of human collecting, which i never knew existed before, which shed light and insight on larger history itself. >> bob weil, publishing director of live right. what tv is on location at book expo america. this is the publisher's annual trade show. you can see a lot of the crowd here. was he of the publishers get together and talk about their upcoming fall books. you are watching the tv on c-span2. ..