GARY B. NASH is a professor of history emeritus and director emeritus of the National Center for History in the Schools at the University of California, Los Angeles, where he has taught since 1966. He was co-director of the National History Standards Project in United States and World History and editor of the standards first published in 1994 with a revised edition in 1996. Nash served as President of the Organization of American Historians in 1994-95 and is an elected member of the American Philosophical Society, the American Academy of Arts and Sciences, the American Antiquarian Society, and the Society of American Historians. He was a member of the National Park Service Second Century Commission, which published its report to the U.S. President and Congress in 2010. He also coauthored Imperiled Promise: The State of History in the National Park Service (2012). He has published many books and essays in his fields of Early American History, African American History, and Native American History. Among them are Quakers and Politics: Pennsylvania, 1681-1726 (1968); Red, White, and Black: The Peoples of Early America, also published in Spanish, 7 editions (1974, 1982, 1992, 2000, 2006, 2010, 2015); The Urban Crucible: Social Change, Political Consciousness and the Origins of the American Revolution (1979); Forging Freedom: The Formation of Philadelphia's Black Community, 1720-1840 (1989); Race and Revolutions (1993); Freedom by Degrees: Emancipation and Its Aftermath in Pennsylvania, 1690-1840, co-author (1994); History on Trial: Culture Wars, and the Teaching of the Past, co-author (1998); Forbidden Love: The Hidden History of Mixed-Race America (1999; revised ed., 2010); First City: Philadelphia and the Forging of Historical Memory (2002); African American Lives: The Struggle for Freedom, with Clay Carson and Emma Lapsansky (2005); The Unknown American Revolution: The Unruly Birth of Democracy and the Struggle to Create America (2005); The Forgotten Fifth: African Americans in the Age of Revolution (2006); Friends of Liberty: Three Patriots, Two Revolutions, and a Tragic Betrayal in the New Nation: Thomas Jefferson, Tadeuz Kosciuszko, and Agrippa Hull, with Graham Hodges (2008); The Liberty Bell (2010); Revolutionary Founders, coedited with Alfred Young and Ray Raphael (2012); and Warner Mifflin: Unflinching Quaker Abolitionist (2017). He currently resides in Pacific Palisades, California.
 
MICHAEL R. MCDOWELL, for more than fifteen years, has researched eighteenth-century Delaware Quaker Warner Mifflin's antislavery activism using primary documents, including Mifflin's extensive correspondence. McDowell is a member of the board of the historic Hale-Byrnes House in Delaware and has published articles on Mifflin and an early Delaware Quaker antislavery petition in Delaware publications. He has also given presentations on Warner Mifflin's antislavery activism at Camden Delaware Friends Meeting (2005), Newark Delaware Friends Meeting (2015), and as a part of a 2013 symposium in Wilmington, "Let This Voice be Heard: 18th Century Abolitionists." McDowell also presented "Laying the Track for the Underground Railroad: Warner Mifflin's Eighteenth-Century Antislavery Legacy in the Delmarva Peninsula" at the 2016 Harriet Tubman Underground Railroad Conference. He currently resides in Newark, Delaware.