Just today I received the Zachman book on Calvin and RC, but I also happened to order this one as well and have read it first.
It is invaluable. With essays on the failed Council of Florence, the integrity of Melanchthon, the catholicity of Calvin, and perhaps the most valuabe, the Reformed and Evangelical Irenics: Pareus, Drury, Calixtus, etc.
This is where it’s at. You must all get this book and read it posthaste.