An article from Wikipedia.

[Enrique]

This is what Wikipedia has to say about Breikopf und Hartel, the famous music publishing house:

https://en.wikipedia.org/wiki/Breitkopf_%26_H%C3%A4rtel

From the link:

The company has consistently supported contemporary composers and had close editorial collaboration with Beethoven, Haydn, Mendelssohn, Schumann, Chopin, Liszt, Wagner and Brahms.

And Mozart? Haydn is there. Why not Mozart?

[Zevy]

And Mozart? Haydn is there. Why not Mozart?

If you'd like, you can edit the Wikipedia page yourself.

[Michael]

And Mozart? Haydn is there. Why not Mozart?

He is mentioned in the article - third paragraph:

In the 19th century they also published the first "complete works" editions of various composers, for instance Bach (the Bach-Gesellschaft edition), Mozart (the Alte Mozart-Ausgabe),[3] and Schubert (the Franz Schubert's Werke).

Unless you mean why did they not support Mozart in his lifetime? I don't know but the firm wasn't known as Breitkopf and Hartel until after Mozart's death, when the company was taken over by Hartel. (Again according to Wikipedia.)


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[Enrique]

That's what I mean. Haydn and Mozart lived in a time when the publication of musical works was not as usual as in Beethoven's. I wonder how big a part of Mozart's total output was published during his lifetime. And the same goes for Haydn.

[Enrique]

If you'd like, you can edit the Wikipedia page yourself.

I don't say their statement is incorrect.