Jean H. Baker is a professor of history at Goucher College. She is the author of several books, including The Stevensons and Mary Todd Lincoln, and is at work on a book about the suffrage movement. She lives in Baltimore, Maryland.

H. W. Brands is distinguished professor of history at Texas A&M University. His previous books include the Pulitzer Prize finalist The First American: The Life and Times of Benjamin Franklin, The Age of Gold, and a biography of Teddy Roosevelt. He lives in Austin, Texas.

Douglas Brinkley is the director of the Theodore Roosevelt Center and professor of history at Tulane University. He is the author of biographies of Henry Ford, Jimmy Carter, Dean Acheson, James Forrestal, John Kerry, and Rosa Parks, and his most recent books include The Great Deluge, The Boys of Pointe du Hoc, and Tour of Duty. He is a contributing editor for Vanity Fair, the Los Angeles Times Book Review, and American Heritage and a frequent contributor to The New York Times, The New Yorker, and The Atlantic Monthly. He lives in New Orleans with his wife and children.

Alan Brinkley is the author most recently of The Publisher: Henry Luce and His American Century, which was a Pulitzer Prize finalist. He is also the author of Voices of Protest: Huey Long, Father Coughlin, and the Great Depression, which won the National Book Award, and The End of Reform: New Deal Liberalism in Recession and War. He is the Allan Nevins Professor of History at Columbia University and has also taught at Harvard, Oxford, and Cambridge. He lives in New York City.

A Rhodes Scholar and a decorated army officer, Josiah Bunting III served in Vietnam and was superintendent of the Virginia Military Institute for eight years. He is the author of the novels All Loves Excelling, The Lionheads, The Advent of Frederick Giles, and An Education for Our Time. Bunting is also a classical pianist and a long-distance runner. He lives in Newport, Rhode Island.

Charles W. Calhoun is a professor of history at East Carolina University. A former National Endowment for the Humanities fellow, Calhoun is the author or editor of four books, including The Gilded Age, and a member of the editorial board of the Journal of the Gilded Age and Progressive Era. He lives in Greenville, North Carolina.

Gail Collins is an op-ed columnist for The New York Times, where she previously served as editorial page editor—the first woman to hold that position. She is the author of When Everything Changed: The Amazing Journey of American Women from 1960 to the Present; America's Women: 400 Years of Dolls, Drudges, Helpmates, and Heroines; and Scorpion Tongues: Gossip, Celebrity, and American Politics. She lives in New York City with her husband, Dan Collins.

Robert Dallek is the author of several bestselling presidential histories, including Nixon and Kissinger: Partners in Power; An Unfinished Life: John F. Kennedy, 1917–1963; and the classic two-volume biography of Lyndon Johnson, Lone Star Rising and Flawed Giant. He has taught at Columbia, Oxford, UCLA, Boston University, and Dartmouth, and has won the Bancroft Prize, among numerous other awards for scholarship and teaching. He lives in Washington, D.C.

John W. Dean served as Richard Nixon's White House counsel for a thousand days. He is the author of two books recounting his days in the Nixon administration, Blind Ambition and Lost Honor, as well as Unmasking Deep Throat. A native of Marion, Ohio, he lives in Beverly Hills, California.

Elizabeth Drew is the award-winning author of thirteen previous books, including Washington Journal, Politics and Money, Whatever It Takes: The Real Struggle for Political Power in America, and The Corruption of American Politics. She is a regular political correspondent for The New York Review of Books and the former Washington correspondent for The New Yorker. She lives and works in Washington, D.C.

Paul Finkelman is the author of Dred Scott v. Sandford: A Brief History and Slavery and the Founders: Race and Liberty in the Age of Jefferson. The author or editor of more than twenty-five books, he is a distinguished professor at Albany Law School and a noted specialist in American legal history, race, and constitutional law. He lives in Slingerlands, New York.

Annette Gordon-Reed is the author of The Hemingses of Monticello: An American Family, for which she was awarded the Pulitzer Prize in History and the National Book Award. She holds three appointments at Harvard University: professor of law at Harvard Law School, professor of history in the Faculty of Arts and Sciences, and the Carol K. Pforzheimer Professor at the Radcliffe Institute for Advanced Study. A MacArthur Fellow and a recipient of the National Humanities Medal, she is also the author of Thomas Jefferson and Sally Hemings: An American Controversy; the coauthor with Vernon E. Jordan, Jr., of Vernon Can Read!; and the editor of Race on Trial: Law and Justice in American History. She lives in New York City.

Henry F. Graff is a professor emeritus of history at Columbia University, where he taught his pioneering seminar on the presidency. The author of The Tuesday Cabinet and the reference work The Presidents, he is a frequent commentator on radio and television. Graff lives in New York.

David Greenberg is a professor of history and media studies at Rutgers University, a columnist for Slate, and the author of the prizewinning Nixon's Shadow: The History of an Image. A former acting editor of The New Republic, he has written for many scholarly and popular publications, including The Atlantic Monthly, Foreign Affairs, The New York Times, and The Washington Post. He lives in New York City.

Gary Hart represented Colorado in the U.S. Senate from 1975 to 1987. He is the author of fourteen books, and has taught at Yale, the University of California, and Oxford University, where he earned a doctor of philosophy degree in politics. He was co-chair of the U.S. Commission on National Security for the 21st Century and is currently senior counsel to the multinational law firm Coudert Brothers. He resides with his family in Kittredge, Colorado.

Michael F. Holt is the Langbourne M. Williams Professor of American History at the University of Virginia. He is the author of six books, including the award-winning The Rise and Fall of the American Whig Party and By One Vote: The Disputed Presidential Election of 1876. He lives in Charlottesville, Virginia.

Roy Jenkins was the author of twenty-one books, including the New York Times bestsellers Churchill and Gladstone, the latter of which won the Whitbread Prize for Biography. Active in British politics for half a century, he entered the House of Commons as a Labour member in 1948 and subsequently served as minister of aviation, home secretary, and chancellor of the Exchequer. In 1977—81 he was president of the European Commission. In 1987 he became chancellor of Oxford University and took his seat in the House of Lords as Lord Jenkins of Hill head. He also served as president of the Royal Society of Literature.

Zachary Karabell is the author of several works of American and world history, including The Last Campaign: How Harry Truman Won the 1948 Election and Parting the Desert: The Creation of the Suez Canal. He has taught at Harvard and Dartmouth, and his work has appeared in The New York Times, the Los Angeles Times, and Newsweek. He lives in New York City.

William E. Leuchtenburg, a professor emeritus at the University of North Carolina at Chapel Hill, is a noted authority on twentieth-century American history. A winner of both the Bancroft and Parkman prizes, he is the author of numerous books on the New Deal. In 2008, he was chosen as the first recipient of the Arthur M. Schlesinger Jr. Award for Distinguished Writing in American History of Enduring Public Significance.

James Mann is the author of six books on American politics and national security issues, including Rise of the Vulcans: The History of Bush’s War Cabinet and The Obamians: The Struggle Inside the White House to Redefine American Power. A longtime correspondent for the Los Angeles Times, he is currently a fellow in residence at the Johns Hopkins University School of Advanced International Studies. He lives in Washington, D.C.

Gary May is a professor of history at the University of Delaware. The author of three books, including the critically acclaimed The Informant: The FBI, the Ku Klux Klan, and the Murder of Viola Liuzzo, he lives in Newark, Delaware.

Timothy Naftali is the director of the Richard Nixon Presidential Library and Museum, having previously served as director of the Presidential Recordings Program at the University of Virginia. He is the coauthor of Khrushchev's Cold War and One Hell of a Gamble: Khrushchev, Castro, and Kennedy, 1958–1964, and the author of Blind Spot: The Secret History of American Counterterrorism. He lives in Los Angeles.

Charles Peters is the author of Five Days in Philadelphia and How Washington Really Works, among other books. He is the founder of The Washington Monthly, that he edited for thirty-two years, following a career in politics and government which included serving in the West Virginia legislature, working on John F. Kennedy's 1960 campaign, and helping to launch the Peace Corps. He lives in Washington, D.C.

Kevin Phillips has been a political and economic commentator for more than three decades. He is currently a regular contributor to the Los Angeles Times and National Public Radio and also writes for Harper's Magazine and Time. He is the author of Wealth and Democracy, The Cousins' Wars, and The Emerging Republican Majority, among many other books. He lives in Litchfield, Connecticut.

Ira Rutkow is a clinical professor of surgery at the University of Medicine and Dentistry of New Jersey. He also holds a doctorate of public health from Johns Hopkins University. He is the author of Bleeding Blue and Gray: Civil War Surgery and the Evolution of American Medicine and Surgery: An Illustrated History, which was a New York Times Notable Book of the Year. He and his wife divide their time between New York City and the Catskills.

Hans L. Trefousse, distinguished professor emeritus of history at Brooklyn College and the Graduate Center of the City University of New York, is a specialist in the history of the Civil War and Reconstruction. He is the author of biographies of leading figures of the period as well as works on the Pearl Harbor attack.

Michael Tomasky is a special correspondent for The Daily Beast and the editor in chief of Democracy, as well as a regular contributor to The New York Review of Books. He was previously executive editor of The American Prospect and the founding editor of Guardian America. He is the author of Left for Dead: The Life, Death, and Possible Resurrection of Progressive Politics in America and Hillary’s Turn: Inside Her Improbable, Victorious Senate Campaign. He lives outside Washington, D.C.

Jacob Weisberg is chairman and editor-in-chief of The Slate Group and the former editor of Slate magazine. Weisberg is the author of The Bush Tragedy and is the creator of the "Bushisms" book series. He previously worked for The New Republic and was a contributing writer for The New York Times Magazine, a contributing editor to Vanity Fair, and a columnist for the Financial Times. He lives in New York City.

Ted Widmer is the director of the John Carter Brown Library at Brown University. He is the author of Young America and the co-author, with Alan Brinkley, of Campaigns. Widmer served as senior adviser to President Clinton and director of speechwriting at the National Security Council. He lives in Providence, Rhode Island.

Sean Wilentz, a professor of history at Princeton University, is the author or editor of eight previous books, including Chants Democratic and The Rise of American Democracy. He has also written on contemporary politics and history for The New York Times, the Los Angeles Times, The New Republic, and other publications. He lives in Princeton, New Jersey.

Garry Wills, adjunct professor of history at Northwestern University, won the Pulitzer Prize and the National Book Critics Circle Award for Lincoln at Gettysburg. He is also the author of Saint Augustine and Papal Sin.

Julian E. Zelizer is the author of Arsenal of Democracy: The Politics of National Security from World War II to the War on Terrorism, and a regular contributor to CNN.com, The Daily Beast, Politico, The Huffington Post, and other publications. He is a professor of history and public affairs at Princeton University. He lives in Princeton, New Jersey.