had around 100 opus numbers published, mainly songs, chamber music and smaller piano compositions. Publication of smaller pieces continued (including opus numbers up to 173 in the 1860s, 50 instalments with songs published by Diabelli and dozens of first publications Peters), but the manuscripts of many of the longer works, whose existence was not widely known, remained hidden in cabinets and file boxes of Schubert's family, friends, and publishers. Even some of Schubert's friends were unaware of the full scope of what he wrote, and for many years he was primarily recognized as the "prince of song", although there was recognition of some of his larger-scale efforts. In 1838 Robert Schumann, on a visit to Vienna, found the dusty manuscript of the C major Symphony (D. 944) and took it back to Leipzig where it was performed by Felix Mendelssohn and celebrated in the Neue Zeitschrift. An important step towards the recovery of the neglected works was the journey to Vienna which the music historian George Grove and the composer Arthur Sullivan made in October 1867. The travellers unearthed the manuscripts of six of the symphonies, parts of the incidental music to Rosamunde, the Mass No. 1 in F major (D. 105), and the operas Des Teufels Lustschloss (D. 84), Fernardo (D. 220), Der vierjährige Posten (D. 190), and Die Freunde von Salamanka (D. 326), and several other unnamed works. With these discoveries, Grove and Sullivan were able to inform the public of the existence of these works; in addition, they were able to copy the fourth and sixth symphonies, the Rosamunde incidental music, and the overture to Die Freunde von Salamanka. This led to more widespread public interest in Schubert's work. Complete editions From 1884 to 1897, Breitkopf & Härtel published Franz Schubert's Works, a critical edition including a contribution made – among others – by Johannes Brahms, editor of the first series containing eight symphonies. The publication of the Neue Schubert-Ausgabe by Bärenreiter started in the second half of the 20th century. Deutsch catalogue Since relatively few of Schubert's works were published in his lifetime, only a small number of them have opus numbers assigned, and even in those cases, the sequence of the numbers does not give a good indication of the order of composition. Austrian musicologist Otto Erich Deutsch (1883–1967) is known for compiling the first comprehensive catalogue of Schubert's works. This was first published in