The Watsons, by Jane Austin and John Coates (PB, 1977, brown pages, $2)
The Watsons was a five chapter long manuscript. Jane may never have finished it, but that didn't stop others from doing so. The first author to finish it was her niece, but there were 6 others after that. This one comes somewhere in the middle of the pack. This Watsons was finished by John Coates, who admits to changing even Austin's 5 real chapters.
He did write one interesting paragraph in his "Advertisement by the author: "As a last effort to draw attention away from my failings, can anyone tell me how Mr. Bennet's estate was entailed on a Mr. Collins without, of course, introducing a change of surname which should surely have been mentioned if it had occurred?" Actually, I had wondered about that, but does it really matter?
Look for this... whatever it is... in the classics section. Well, at least the first five chapters are partially a classic, maybe.
FYI: This partial manuscript was the last one to be owned privately. A year ago it was sold by Soetherby's to the University of Oxford for over $1.5 million.