Page:
Source:
p. 4, b. 34-52
A - Autograph
Prezentacja
Select
In A (→FE,EE1), there is no accidental to f1(2), the 1st quaver in b. 45 and 47. It made the reviser of GE, and then also of EE2 (→EE3), to consider it Chopin's mistake and to add a 
to each of those notes. To avoid any doubts, in the main text we add cautionary naturals to them, in spite of the fact that there are no f
notes in the preceding bars.
category imprint: Differences between sources; Editorial revisions
issues: EE revisions, GE revisions, Cautionary accidentals
notation: Pitch
Missing markers on sources:
A, FE1, FE2, FED, GE1, GE2, GE3, GE4, GE1a, EE1, EE2, EE3