Because the catalog has gone through three name changes since 1835, the catalogs are accessible through three different records in HOLLIS (Harvard's on-line library catalog):A catalogue of the Law School in Harvard University (1835/36-1868/69): HOLLIS 11365376
The Law School of Harvard University (1878/89-1970/71): HOLLIS 374288
Harvard Law School Catalog (1970/71-2005/06): HOLLIS 374287
Beginning in the academic year 2006/2007, the course catalog is only available online through the Law School's website.
A complete list of the Library's digital collections is here; these include the Court of Restitution Appeals Reports; "Dying Speeches & Bloody Murders: Crime Broadsides"; the Henry Phillips Papers; "Studies in Scarlet: Marriage & Sexuality in the US and UK, 1815-1914"; "Bracton Online"; and the Nuremberg Trials Project (illustrated at left).Hat tip: H-Law.