Ask anyone who the best pool player of all time was, and they may say Minnesota Fats. That's an amazing thing, because he was not the greatest pool player of all time, and the book/movie the Hustler were NOT based on him. Instead, he borrowed the name after the fact. WIllie Mosconi should be on people's short list as one the the greatest pool players of all time, but few know who he is. Such is the nature of people's lack of knowledge of pool history, and the effectiveness of Minnesota Fats' con.
This book covers these facts in detail, and covers the rivalry between Minnesota Fats and WIllie Mosconi. It all leads up to the two players contending against each other on ABC's wide world of sports.
Both RA Dyer books I have read were a bit dry, but informative. This book was more interesting than the other, though. I suggest anyone wanting to understand either of these players read this book. This information is covered in other places, but in piecemeal fashion.
If pool/billiards history is not your thing, I suggest more entertaining books such as 'Playing off the Rail' (non fiction), or 'Stroke' (fiction)