Leonardo was fascinated by human physiognomy and began making studies of grotesque heads with various expressions during his first stay in Milan, between 1482 and 1499.
<bdi><a href="https://en.wikipedia.org/wiki/en:Leonardo_da_Vinci" class="extiw" title="w:en:Leonardo da Vinci"><span title="Italian Renaissance polymath (1452−1519)">Leonardo da Vinci</span></a>
</bdi>
between circa 1482 and circa 1499 <div style="display: none;">date QS:P571,+1450-00-00T00:00:00Z/7,P1319,+1482-00-00T00:00:00Z/9,P1326,+1499-00-00T00:00:00Z/9,P1480,Q5727902</div>
Vincent Delieuvin (dir.), Louis Frank (dir.), Gilles Bastian, Jean-Louis Bellec, Roberto Bellucci, Thomas Calligaro, Myriam Eveno, Cecilia Frosinini, Éric Laval, Bruno Mottin, Laurent Pichon, Élisabeth Ravaud, Thomas Bohl, Benjamin Couilleaux, Barbara Jatta, Ludovic Laugier, Pietro C. Marani, Dominique Thiébaut, Stefania Tullio Cataldo et Inès Villela-Petit (préf. Brian Moynihan ; Xavier Salmon ; Sébastien Allard), Léonard de Vinci (catalogue de l’exposition au musée du Louvre, du 24 octobre 2019 au 24 février 2020), Paris-Vanves, Louvre éditions - Hazan, 2019, 455 p., 30 cm (<a href="//commons.wikimedia.org/wiki/Special:BookSources/978-2-7541-1123-2" title="Special:BookSources/978-2-7541-1123-2">ISBN 978-2-7541-1123-2</a>, OCLC 1129815512).