21st Editions Editor

PBS American Experience, Advisor

Thirteen, WNET, Advisor

ABC and Amazon Historical Consultant

WAR/PHOTOGRAPHY Exhibition Consultant

Frederick Douglass Papers Fellow

Centre for Research in Race and Rights International Advisory Board

Antislavery Usable Past Project International Advisory Board

Ford's Theatre Advisory Council

Gilder Lehrman Institute Advisory Board

National Museum of African American History & Culture Advisory Committee

Mass Humanities Board of Directors

American Academy of Arts and Sciences Fellows Program Reviewer

Antislavery Literature Project Advisory Board

Primary Source Advisory Board

 Sexuality, Gender and Human Rights Program Advisor

Visual Studies at the University of Houston International Board

C19 Advisory Board

Gilder Lehrman Center, Yale University, Advisory Board

Race in the Atlantic World, 1700-1900 Editorial Advisory Board

African American National Biography Editorial Board

Alexander Hamilton Institute Board of Academic Advisors

Wendell Phillips Bicentennial Advisory Committee

Massachusetts Sesquicentennial Commission

Lincoln Bicentennial Commission Advisory Board