Dunne provides nice backstory to the classic/most popular chess books of the 20th century and often discusses the motivation behind an author's decision to write. Dunne also goes into some detail about the contents of each book on his list, and if you don't own one of the listed books, Dunne's comments put the book into perspective with other chess books of its genre. For example, Tarrash's THE GAME OF CHESS is discussed, and Dunne puts some historical perspective on this book with respect to other classics of that era.
When necessary, different editions of each book are discussed (e.g., MCO).
A few drawbacks:
(1) Dunne's HOW TO BECOME A CANDIDATE MASTER was included on the list and, although it is a very good book, it was a bit egotistical of Dunne to include his own writing. This is tough criticism, however, because HTBACM was a great book in its day (and still is). It just doesn't seem appropriate to list the book as one of the best of all time.
(2) There are not enough photographs.
Dunne's house was burned down a few yeas ago, and he lost his wife and grand-daughter in the flames, along with most of his chess book collection. Perhaps if so many of Dunne's books were not lost in that blaze there would have been more pictures in this volume.
Whether you agree with Dunne's selections or not, it's interesting to read his comments and backstory to each book.
This is a nice addition to any chess library.