While cataloguing the music manuscripts held at the Kunstsammlungen der Fürsten zu Waldburg-Wolfegg at Wolfegg Castle, Dr Gertraut Haberkamp discovered a complex of eight works by Leopold Mozart among its holdings. It consists of six symphonies, three of them previously unknown, and two further sets of parts, one for the widely known divertimento the Musikalische Schlittenfahrt, the other for the Oratorium pro quadragesima. RISM mentions the types of paper the manuscripts are written on, but only one, and does not identify them at all. In the case of Leopold Mozart copies, however, it is important to assess the closeness of a copy to the composer as there are only a few surviving autographs. And here two different complexes can be identified: the instrumental works on the one hand, and the Oratorium pro quadragesima on the other.