. >> host: kevin kruse is professor of history at princeton. his book is "one nation under god" mse concludes in the book, history reminds us what a public religion is in large measure an invention of the modern era. this is book tv on c-span2. >> host: and now joining us on booktv, tracy k. smith, pulitzer prize winner and has written a memoir called tran 11. professor smith, who is kathy? >> guest: kathy is my mother. in the course of thinking about this book, i realized that person i grew up knowing with such an obvious statement. one of my main wishes and wanting to write about

kevin kruse argues that corporate america invented the idea that the united states is a christian nation in one nation under god and democracies news andrew bernstein examines the way that thomas jefferson's legacy has been used throughout american history. and also releasing this week on the 150th anniversary of resident lincoln's assassination looking at the life of john wilkes booth in fortune's fool. and investigating how geography has shaped regional understandings of freedom and the constitution and the law of the land. c-span's latest book, first ladies, presidential historians on the lives of 45 iconic american women publishes on april 14, 2015. booktv visited the printing plant in berryville, virginia, to see the manufacturing process and watch the books come off of the presses. when we were there we talked with printers america general manager mark bone about the business of printing books. [inaudible] a paragraph [printing sounds] its ai [printing sounds] >> hello what is the most difficult part of printing a book reign. >> guest: its it's organizing the process, getting the c