Professor Amy Greenberg is the George Winfree Professor of History and Women's Studies at Pennsylvania State University. She is the author of numerous books including A Wicked War: Polk, Clay, Lincoln, and the 1846 U.S. Invasion of Mexico and Lady First: The World of First Lady Sarah Polk. The following are books and articles pertinent to our conversation:

Lady First: The World of First Lady Sarah Polk

A Wicked War: Polk, Clay, Lincoln, and the 1846 U.S. Invasion of Mexico

James K. Polk, Vol. 1: Jacksonian, 1795-1843

James K. Polk, Volume II: Continentalist, 1843-1846

Our Sister Republics: The United States in an Age of American Revolutions

The Glorious Cause: The American Revolution, 1763-1789

Met His Every Goal? James K. Polk and the Legends of Manifest Destiny