In the main text we add a cautionary 
to f. In EE the accidental was added later, to the R.H. f1. In the penultimate L.H. octave, there is only one in A, to the top note. The patent inaccuracy was corrected in GE (→FE,EE).
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category imprint: Interpretations within context; Differences between sources; Editorial revisions
issues: EE revisions, GE revisions, Inaccuracies in A
notation: Pitch