Vincent Virga talked about his book, Cartographia: Mapping Civilizations, published by Little, Brown and Company. The author worked for eight years with the staff of the Library of Congress to create this book on the history of maps and how they reveal civilizations. John Hebert and Ronald Grim contributed to the book and joined the author for a presentation at the Library of Congress. Following their presentations, a video tour showed the "treasures vault" of the Library of Congress Geography and Map Division to examine and learn more about the holdings and some of the maps included in the book. Vincent Virga is a photography editor who has contributed to over 150 books. He has written three novels and is the co-author of Eyes of the Nation: A Visual History of the United States.