Had been on my list for a good twenty years, so I went ahead and got it with a free book credit. Not as good as Nero Wolfe of West Thirty-fifth Street: The Life and Times of America's Largest Private Detective, but that was contemporary to the series, so couldn't include later books. The main drawback of this is the expected one: it's all just the opinion of this author. He includes a "comment" on each book, which is just what he thinks of it, I often disagree, and it takes up the most page space. If the original edition had been written later, the whole thing would have been a very useful little blog instead of a book.
Analysis of Wolfe novels. Chapter comparing the Earle Staley Gardner Perry Mason works and Stout’s Wolfe series. It is interesting that Gardner vastly outsold Stout in their era but that as time goes on interest in the Wolfe series continues and the Mason stories are being gradually forgotten, remembered if at all, for the Raymond Burr TV series.