dr. chaney for coming here today. >> it has been a great pleasure for us. thank you very much. >> and there are signed copies of her books in the lobby. >>> interested in america history? visit our web site. you can vee our tv school yule and wooch college lextures and more. >>> join american it is a live program. we'll be learning about the artifacts and recorded in 2015 when the building was under construction and the artifacts were in storage. >> i this i they all tend to look alike after a while. this was a really significant