It is often stated that to explore the entire range of Medieval Arthurian Literature, the reader would need more than one lifetime. While this collection doesn't contain the entire corpus of Arthurian literature, it does contain a pretty good selection of texts, meaning that the reader can sample various versions of the legend and a bibliography to fuller sources, meaning the reader can decide whether or not they wish to pursue one of the selections further.
The collection begins by giving selections from material that is often used by scholars interested in the so called Historical Arthur. Texts include selections from Gildas, Nenius and many more.
Having no desire to pursue this Historical Arthur subject, I found the rest of the work more interesting. This is taken up by representative selection from the more literary polished Romance Traditions. Texts translated come from France, Germany, England and more besides. Lesser known authors include Layamon and John Hardyng, alongside family favourites like Malory.
This is an excellent collection for those curious about Arthurian Literature. My only gripe about this book is that it would've benefited from the inclusion of some of the Welsh poems that mention Arthur. That aside, this is a great collection of Arthurian Literature.