Mendelssohn's copies of Beethoven's piano sonatas, bound for him and signed twice on the fly-leaves. Vienna: Tobias Haslinger, [1828-1830]. 30 editions in two volumes, folio (ca. 32 x 25 cm.), engraved throughout, titles in brown and black, engraved dedication leaves, contemporary German romantic presentation binding, green calf, gilt spine and edges, gilt auggering.