Yes Fredric Maffei's books are very good and well written. I used to loan out copies yrs ago to try to show more of the nature of these dogs, that they are not "forced" to fight, it is part of their nature and heritage. He really understands the bulldogs and based his stories on real dogs.
James Thurber the writer wrote "Snapshot of a Dog" in the 1930s about Rex the bulldog he grew up with. It used to be online to read for free, but I can't find the link now. I'll keep looking.
Another old time writer who a few pieces on bulldogs is John Taintor Foote, his "Allegheny" is worth reading,
and so is the story "Bulldog" by the Western write Max Brand. Both men were well familiar with the pit bulls of the early 20th century.
A more recent book is D. B. Plummer's fine novel "Nathan A Pit Fighting Dog" which tells the life and combats of a Victorian era "bull n terrier" from pup to death. It's a bit hard to find but has been reprinted, and one can often find copies for sale at a reasonable price. It's a UK book and here is the Amazon UK page about it, the reviews tell more about it --
https://www.amazon.co.uk/Nathan-Nove...oding=UTF8&me=
Plummer was a well known terrier man and author, he bred his own line of working terriers bred down from Jack Russells with a dash of Staffordshire bull added. He also ran lurchers on hares and other game, he was an interesting man and his other books, both fiction and nonfiction are worth reading.
The book on the Colby family of dogs is pretty good, and of course Richard Stratton's books are classics now. Amazon has copies of Colby's book --
https://www.amazon.com/Colbys-Book-A...oding=UTF8&me=
Bobby Hall's Bullyson books are good but pricey. I'll try to remember more good books to recommend, I have a large collection put together over the last 50 yrs…