Timothy Walch is Director Emeritus of the Herbert Hoover Presidential Library and the author or editor of seventeen previous books on various historical topics including Herbert Hoover and Franklin D. Roosevelt: A Documentary History (1998), Herbert Hoover and Harry S. Truman: A Documentary History (1992), and Uncommon Americans: The Lives and Legacies of Herbert and Lou Henry Hoover (2003). He has appeared on MSNBC, CNN, CSPAN, and other networks and is frequently quoted on the role of former presidents in public life as well as on the growing importance of the vice presidency in publications such as the New York Times, the Washington Post, and USA Today.