All the Weyrs of Pern
picks up with the people we know communicating with Aivas to carry out plans to get rid of Thread permanently.
It was ok but I could see that this book should have been one to wrap up the Pern series. Sadly, it is still going.
Renegades of Pern
deals with those who were holdless, for a variety of reasons, during the beginning years of Threadfall. Almost the same period as DragonDrums but from different viewpoints. Sets up just right for the following book, All the Weyrs of Pern. Looking forward to it.
Masterharper of Pern
The story of Master Robinton from his being born til the events of the first Dragonrider trilogy. An extremely talented boy is ignored by his perfectionist father even while being better than him. Amazing that Robinton turned out as well as he did. A very enjoyable tale, even though McCaffrey shows her true colors in regards to her views on marriage and sexuality.
Not sure what is up with this specific edition on Goodreads. It is NOT abridged. [nor specially priced :D]