The "Oxford Guide to US Supreme Court Decisions" is not much more than that. It gives an extremely expansive overview of all US Supreme Court cases that can remotely be considered important, throughout the period of its existence. Every case contains information on the reference number, the composition of the majority, concurrence and dissents, and a summary of what the case or controversy was about by a legal scholar.

The latter are sometimes a little problematic. Many cases are not given more than one or two paragraphs, and the index is incomplete. Some of the writers of the summaries also have a tendency to insinuate their own opinions on the cases into it, which goes particularly for those done by Kermit Hall himself, which are invariably positive about the most progressive justices and generally scathing about Scalia (though this is done in a 'read between the lines' manner, of course). An additional issue is that the index is incomplete, and the promised biographies of all Justices is no more than a list of their dates of nomination, appointment and death, which is rather disappointing.

Still overall, it's an essential reference book for looking up cases and the inclusion of related cases in the case summaries makes it much easier to trace precedent through the decades. ( )