Op. 2, Variations in B♭ major
Op. 10, 12 Etudes
Op. 11, Concerto in E minor
Op. 21, Concerto in F minor
Op. 22, Polonaise in E♭ major
Op. 24, 4 Mazurkas
Op. 25, 12 Etudes
Op. 26, 2 Polonaises
Op. 27, 2 Nocturnes
Op. 28, 24 Preludes
Op. 30, 4 Mazurkas
Op. 35, Sonata in B♭ minor
Op. 50, 3 Mazurkas
Op. 63, 3 Mazurkas
Op. 64, 3 Waltzes
Op. 11, Concerto in E minor, Mvt I
The cautionary 
before a1 is present in FE (→EE) and GE3. The absence of the mark in GE1 (→GE2) may indicate that it was added in the last proofreading of FE.
In EE, a 
was added before f
1, which seems to be poorly justified in this context.
Compare the passage in the sources »
category imprint: Differences between sources
issues: EE revisions, GE revisions, Cautionary accidentals, Authentic corrections of FE
notation: Pitch