You should also be able to access a short video I made here. It is not easy to find this conveniently packaged set for sale nowadays. Most serious collectors will already possess the individual sets with complete librettos. But if you do not have all (or any) of these recordings already, this set may suit you.
It contains a very nice booklet with cast lists, track lists and a brief synopsis in several languages. Full libretto can be accessed online. Just use a search engine to track them down.
Please feel free to message me with any questions.