Alberto Ascari and Luigi Villoresi in action at the 1952 Italian GP on 09 September 1952.<a class="external autonumber" href="https://it.wikipedia.org/wiki/Gran_Premio_d%27Italia_1952">[1]</a> Both are driving <a href="https://en.wikipedia.org/wiki/Ferrai_Tip_500" class="extiw" title="w:Ferrai Tip 500">Ferrari Tipo 500s</a>.
Unknown author<span style="display: none;">Unknown author</span>
1952-09-07
Piero, Casucci, <i>Dossier Quattroruote: Ferrari F1 1948-1963</i>, Editoriale Domus, Milano 1985 (pag. 23)