Commentaries in treatises are helpful for finding historical and background information about your topic. To find specific treatises available at the University of Minnesota, search MNCAT using key words for your topic. To learn about works that may not be available on campus, search WorldCat. This source combines the listings of libraries throughout the United States as well as several major libraries abroad. It provides keyword access to authors, titles, and subjects.
Also useful are American Law Reports (ALR) (Reporters KF 132). This series of reporters covers significant developments in American case law. Cases are selectively reported, but each case includes a helpful annotation which comments on the legal issues raised by the case with references to numerous other precedents and commentaries. Several digests exist for the various series. The series is also available on WestlawNext and on Lexis Advance.