* Preface, Undoing Slavery: American Abolitionism in Transnational Perspective, 1776-1865 eds. Michael Roy, Marie-Jeanne Rossignol, & Claire Parfait (Paris: Editions Rue d’Ulm, 2018).
* “’Do Something’: A Letter from Frederick Douglass to an Abolitionist in Ireland,” in James G. Basker General Editor, Frederick Douglass: A Life in Documents Historians Presents Documents from the Gilder Lehrman Collection eds. Justine Ahlstrom & Nicole Seary, (New York: Gilder Lehrman Institute in American History, 2018): 1-3.
* “History and Its Discontents,” in The Future of History: Historians, Historical Organizations and the Prospects for the Field edited by Conrad Edick Wright and Kate Viens (Boston: Massachusetts Historical Society, 2017): 79-88.
* “Abraham Lincoln’s Competing Political Loyalties: Union, Constitution, and Antislavery,” in Nicholas Buccola ed., Abraham Lincoln and Liberal Democracy (Lawrence: University of Kansas Press, 2016): 164-191.
* “The Strange Victory of the Palmetto State” and Introduction to “Slavery and Emancipation,” in Ted Widmer with Clay Risen and George Kalogerakis, The New York Times Disunion: A History of the Civil War (New York: Oxford University Press, 2016): 16-18 and 33-35.
* “James W.C. Pennington and Transatlantic Abolitionism,” in Jan Stievermann ed., The Pennington Lectures, 2011-2015 (Heidelberg, Germany: Universitatsverlag, 2016): 18-36. Reprint of “James W.C. Pennington and Transatlantic Abolitionism,” Heidelberg Center for American Studies, Annual Report 2010-2011 (Heidelberg, Germany: Universitatsverlag, 2011): 160-175.
* “The Long and Proud History of Charleston’s AME Church,” in Chad Williams, Kidada E. Williams, and Keisha N. Blain eds., Charleston Syllabus: Readings on Race, Racism, and Racial Violence (Athens: University of Georgia Press, 2016): 69-70.
* “Did He Die an Abolitionist? The Evolution of Abraham Lincoln’s Antislavery,” American Political Thought 4 (Summer 2015): 439-454. Refereed
* “Lincoln and Black Abolitionists,” in David S. Reynolds ed., Lincoln’s Selected Writing: Authoritative Texts, Lincoln in His Era, Modern Views (New York: W.W. Norton 2015): 495-502. Reprint of “Allies for Emancipation?: Lincoln and Black Abolitionists,” in Eric Foner ed., Our Lincoln: New Perspectives on Lincoln and His World (New York: W.W. Norton, 2008): 167-196.
* “Stanley Harrold’s Border Wars: An Appreciation,” Ohio Valley History 14 (Summer 2014): 32-42.
* “Black Abolitionists Developed Their Own Radical Tradition” in Richard D. Brown and Benjamin Carp eds., Major Problems in the Era of the American Revolution Third Edition (Boston: Wadsworth Cengage Learning, 2014): 277-285. Reprint of “To ‘Cast Just Obliquy’ on Oppressors: Black Radicalism in the Age of Revolution” William and Mary Quarterly LXIV (January 2007): 149-160.
* Review Essay, “The Complicated Histories of Emancipation: State of the Field at 150,” Reviews in American History 41 (December 2013): 665-671.
* “The Strange Victory of the Palmetto State” in Ted Widmer with Clay Risen & George Kalogerakis eds., The New York Times Disunion: Modern Historians Revisit and Reconsider the Civil War from Lincoln’s Election to the Emancipation Proclamation (New York: Black Dog & Leventhal Publishers, 2013): 60-63
* “Did the Abolitionists Cause the Civil War?” in The Abolitionist Imagination (Cambridge, Mass.: Harvard University Press, 2012): 81-108.
* “Secession,” Civil War at 150 First Series (New York: Library of America, 2012): 1-5.
* “James W.C. Pennington and Transatlantic Abolitionism,” Heidelberg Center for American Studies, Annual Report 2010-2011 (Heidelberg, Germany: Universitatsverlag, 2011): 160-175.
* “The Political Ideology of Secession in South Carolina,” in Michael Perman and Amy Murrell Taylor eds., Major Problems in the Civil War and Reconstruction Third Edition (Boston: Wadsworth Cengage Learning, 2011): 121-135. Reprint of “Revolution or Counterrevolution? The Political Ideology of Secession in Antebellum South Carolina,” Civil War History XLVI (September 2000): 205-226.
* “Making Sense of John Brown’s Raid,” in Edward Ayers and Carolyn R. Martin eds., America on the Eve of the Civil War: A Virginia Sesquicentennial Conference (Charlottesville: University of Virginia Press, 2010): 69-89, 112-120.
* “An Alternative Tradition of Radicalism: African American Abolitionists and the Metaphor of Revolution, 1775-1865” in Contested Democracy: Freedom, Race and Power in American History (New York: Columbia University Press, 2007): 9-30
* “Coming of Age: The Historiography of Black Abolitionism,” in Timothy Patrick McCarthy and John Stauffer eds, Prophets of Protest: Reconsidering the History of American Abolitionism (New York: New Press, 2006): 23-38.
* Review Essay “His Truth Is Marching On: John Brown and the Fight for Racial Justice,” in Civil War History 52 (June 2006): 161-169.
* “Black Abolitionism: The Assault on Southern Slavery and the Struggle for Racial Equality,” in Ira Berlin and Leslie Harris eds., Slavery in New York (New York: New Press, 2005): 239-262.
* Review Essay, “History and Art in Ready for Revolution” in The Journal of Blacks in Higher Education (February 2004): 130-133.
* Review Essay, “American Slavery Ten Years Later,” Journal of American Ethnic History (Fall 2004): 105-109.
* “Judicial Nullification: The South Carolina Led Southern Movement to Reopen the African Slave Trade in the 1850s” in Maria Diedrich, Henry Louis Gates, Jr. and Carl Pedersen eds., Black Imagination and the Middle Passage (New York: Oxford University Press, 1999): 127-143.
* “The Caning of Charles Sumner and the Struggle for a Non Racial Democracy in the Age of the Civil War” in Biancamaria Pisapia, Ugo Rubeo, and Anna Scacchi eds., Red Badges of Courage: Wars and Conflicts in American Culture (Rome, Italy: Bulzoni Editore, 1998): 304-314.
* “Louisa Susanna McCord: Spokeswoman of the Master Class in Antebellum South Carolina,” in Susan Ostrov Weisser and Jennifer Fleischner eds., Feminist Nightmares Women at Odds: Feminism and the Problem of Sisterhood (New York: New York University Press, 1994): 62-87.