Sarah Vowell is the author of "Lafayette in the Somewhat United States." Her other books include "Unfamiliar Fishes" (2011), "The Wordy Shipmates" (2008), "Assassination Vacation" (2005) and "Radio On" (1997). Vowell has also written two essay collections, "The Partly Cloudy Patriot (2002) and "Take the Cannoli" (2000). In addition to serving as a contributing editor for "This American Life" from 1996 to 2008, she has written for Esquire, Spin, The New York Times Book Review and McSweeney's. She has served as a correspondent on "The Daily Show with Jon Stewart" and made appearances on "Late Show with David Letterman" and "Late Night with Conan O'Brien." She is the president of the board of a non-profit tutoring and writing center in Brooklyn for students ages six through 18.