Portrait of Officine Ricordi società. Photo by unknown, Milano, 1904.
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Unknown author<span style="display: none;">Unknown author</span></div>
CC BY-SA 4.0
<a rel="nofollow" class="external text" href="https://www.archivioricordi.com/chi-siamo/glam-archivio-ricordi/">Archivio Storico Ricordi</a>, <a rel="nofollow" class="external text" href="https://www.digitalarchivioricordi.com/it/people/display/15434/%20Officine%20Ricordi">Collezione Digitale Ricordi</a>