The Legal History blog (founded by Mary L. Dudziak, the Judge Edward J. and Ruey L. Guirado Professor of Law, History and Political Science at the University of Southern California Law School) has several articles on U.S. slavery and the law:

Guest contributor Salley Greene’s three part series presenting new archival evidence concerning State v. Mann (1830), the North Carolina Supreme Court case which ruled that slaveowners had absolute authority over their slaves and could not be found guilty of committing violence against them. (EDIT: The series actually has four parts.)

Also, an abstract for Gerald Leonard’s forthcoming essay reconsidering the law and politics of the  Dred Scott case.

(Click the Image for Credit and useful teaching resources at pbs.org)