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. 22, Polonaise
The sources are lacking in the 
before a1 at the beginning of the 2nd triplet and before a3 at the end of the bar. It is a consequence of the then rule of validity of accidentals in an octave resulting from the notation, and not from the actual pitch.
Compare the passage in the sources »
category imprint: Interpretations within context
issues: Accidentals in different octaves, Inaccuracies in FE
notation: Pitch