Stephen Ambrose; Doris Kearns Goodwin; Frank McCourt

Historian Stephen Ambrose on his books, "Citizen Soldiers" and "American Heritage: New History of World War II." Pulitzer Prize-winning historian Doris Kearns Goodwin reflects on her childhood and love of baseball in her memoir, "Wait Till Next Year." Author Frank McCourt shares his Pulitzer Prize-winning memoir, "Angela's Ashes," which recounts his impoverished childhood in Ireland.