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b. 48

composition: Op. 42, Waltz in A♭ major

Third in FE1, GE & EE

e1 in FE0

..

There is no con the 2nd crotchet in FE0, probably due to a misinterpretation of the autograph. Chopin added this note in FEG (→GE) and in the base texts to FE and EE

category imprint: Differences between sources; Source & stylistic information

issues: Uncertain notes on ledger lines

b. 49

composition: Op. 42, Waltz in A♭ major

d1-e1 in FE

d1-e1-g1 in GE & EE

..

The d1-e1 second in FE is the original version – in FEG (→GE) Chopin added a gnote to it. Also EE has a completed version with the d1-e1-gchord. Therefore, the fact of leaving the original version in FE seems to be Chopin's oversight. 

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Authentic corrections of GE , Authentic corrections of EE

b. 55

composition: Op. 42, Waltz in A♭ major

..

In FE0 (→FE,FEG) there is no cautionary  next to f2.

category imprint: Differences between sources

issues: Accidentals in different octaves , Cautionary accidentals

b. 58

composition: Op. 42, Waltz in A♭ major

staccato f2 in FE

d2-f2 in GE, EE & FED

..

On the 3rd crotchet FE has a staccato dot under f2 instead of the dnote. Chopin corrected this mistake in FEG (→GE), in pencil in FED and in the base text to EE.

category imprint: Differences between sources; Corrections & alterations

issues: Annotations in teaching copies , Errors in FE , Annotations in FED , Authentic corrections of GE

b. 76-84

composition: Op. 42, Waltz in A♭ major

Thirds in FE & GE

Sixths in EE

..

On the 2nd and 3rd crotchets in bars 76 and 84 EE has an e-csixth, similarly as in analogous bars 44 and 52. It is most probably an authentic variant introduced into the base text to EE.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Authentic corrections of EE