Ricordi - Italian music publisher; Augener - British, the same. Fairly sure that Augener has been subsumed by now by another "concern", but it would have been common for a piece (like the book of pieces by Hungarian composer Istvan/Stephen Heller's The Art of Phrasing, op. 16, written in 1844 or so) to be republished by both those companies. I have, purchased from a local "Friends of the Library" booksale to which people bring music, books, CDs, records, ... they no longer want so that the proceeds can benefit our local library- scores of the op. 45 and 46 sets of etudes of Heller, published sometime early in the 20th century - not first publications, I'm sure, but when those pieces still had some popularity among piano students (or teachers :) ). (Maybe they still do.) (Opus 45, as published by G. Schirmer, definitely _still_ a going concern now, http://www.schirmer.com ... and
some of the op. 45 and 46 studies are still available from Schirmer directly for sale. (I got a CD, also from the booksale, of all the op. 47 studies- and one of Heller's sonatas- which I'd seen mentioned in a book "The Sonata Since Beethoven" at the library years back, excellent book by William Newman - but a very poorly-documented CD, no mention of the 25 individual op. 47 etudes by name- if any- or tempo, just all in one block, for instance.)
My copy of op. 46 was published by the Boston publisher B.F. Wood Music Co. They were still around in the 1950s, but I'm not quite sure if they disappeared or were purchased.
