Daniel J. Sharfstein Daniel J. Sharfstein is an associate professor of law at Vanderbilt University. He is the author of The Invisible Line: Three American Families and the Secret Journey from Black to White. History LessonFeb. 22 2011 7:20 AMOrindatus Simon Bolivar WallA hero of African-American history whose story is forgotten because his descendants decided they were white.Daniel J. Sharfstein