The Ronald Dworkin Papers are open at Yale University. They "document Dworkin’s life and career as a law professor, author, and legal philosopher. Materials primarily document his professional career and activities, including his work as a professor at Yale University, Oxford University, and New York University, as well as his academic writing, focused on legal and political philosophy, and his popular writing on contemporary politics and the U.S. Supreme Court." Pdf of the inventory is here. H/t Scott Shapiro.