Thank you for setting this matter on some firm basis.
Peter, you might look, too, at Lawrence Rainey's essay, "The Price of
Modernism: Publishing The Waste Landí." But read it in Ronald Bush's
T. S. Eliot: The Modernist in History (CUP, 1991), since the versions of
it in his recent books are less clear on the notes. What you'll be most
interested in is E's letter to Maurice Firuski. I don't think that you
or Rainey or anyone has yet to be convincing that they know what was E's
motive for including the notes. Perhaps when I get a chance to read
Jennifer's suggested pages, I'll have to retract this -- I hope so.
Notes to other works? Those to the Dunciad are notorious and lovely.