Gebthner & Wolf of Warsaw published a collected edition in 1882. It was edited by Jan
Kleczynski who referred to ‘variants supplied both by the author himself and passed on
by his most celebrated pupils.’
The Oxford Original Edition of London published in 1932 is based almost entirely on the
seven volume annotated collection of Jane Stirling. The Stirling scores are of special
significance as they represent all Chopin’s piano works, including his posthumous ones,
and were compiled and corrected under Chopin’s supervision. Chopin himself
participated in the final index of incipits so he probably intended the Stirling scores to
form the basis of a collected edition to supersede the early French editions. Since the
Stirling originals have become available, it appears that not all the variants appear in the
Oxford edition and not all of those are correct.
Universal Editions of Vienna published a collected edition in 1901 edited by Raoul
Pugno.
Breitkopf & Härtel of Leipzig published a collected edition in 1913 edited by Carl
Friedman.
Schott of Mainz published a collected edition in 1917-1920 edited by Saur.
Ricordi of Milan published a collected edition in 1923-1937 edited by Brugnoli.
Durand of Paris published a collected edition in 1915-1916 edited by Claude Debussy,
The Pugno, Friedman, Saur, Brugnoli and Debussy editions included no variants in the
main text and were based on Chopin’s final version so far as it could be identified.
Salabert of Paris published a collected edition in 1915-1916 edited by Alfred Cortot
which included detailed commentaries, instructions and exercises.
The Polish Complete Edition was published in Warsaw in 1949-1961 and was ostensibly
based on the editorial work of Ignacy Paderewski, Ludwig Bronarski and Josef
Tuczynski. Paderewski died before the project was properly underway and the main
work was done by Bronarski. This edition was an ambitious scholarly edition. It
considered the widest possible range of manuscripts and printed sources with a view to
producing a definitive text. Bronarski selected freely from different sources, arriving at a
new version that combined material from autographs, copies, the three first editions,
unidentified recent editions and occasionally opinions based on harmonic theories.
Henle of Duisberg published a collected edition (1956- ) edited mainly by Ewald
Zimmermann and accompanied by a detailed commentary. This edition is widely
available and used these days but does have some importations from other editions and
some inaccuracies.