Steve and Cokie Roberts look on as WJLA-TV's Alison Starling introduces them at the National Book Festival on Saturday.

Professor Steve Roberts was interviewed by wife Cokie Roberts at the National Book Festival on Saturday on the National Mall in front of hundreds of fans of his latest book, From Every End of This Earth: 13 Families and the Lives They Made in America. 

Introduced by WJLA-TV reporter Alison Starling, he described his book that chronicles the families of 13 people, including two GW students,  and how their immigration to America changed their lives. 

 The National Book Festival is a yearly event sponsored by the Library of Congress where a selection of authors are invited to give talks about their latest works, sign books, and even appear on C-SPAN, which broadcast from the event live all day.