The Hanson-Dyer Music Collection was a private library, assembled in Paris by Louise Hanson-Dyer between 1929 and 1931, after leaving Melbourne for Europe and shortly before she founded her own publishing house, Editions de l’Oiseau-Lyre. Acquired by the University of Melbourne in 2005, it comprises 15th to early 19th-century music imprints and manuscripts, featuring French operatic works, British publications, works of the Italian renaissance and books on music theory. Each volume features Hanson-Dyer's distinctive bookplate, designed by French artist, Jean-Emile Laboureur, with its stylised view of the Eiffel Tower from one of the windows of her Paris apartment. This digital collection comprises 192 works. It includes all the manuscripts, plus printed music and books chosen on the basis that good quality reproductions are not found in other publicly accessible digital collections, or that there is something special or unique about our particular copy.