J'ai déjà parlé plusieurs fois de mules montées en amazone, en voici un exemple historique
http://www.mexicolore.co.uk/maya/home/the-life-of-alfred-maudslay
Annie Maudslay sitting side saddle on a mule with an opened umbrella, wearing hat, blouse and skirt. She is at the clearing of an archaeological site in Quiriguá, looking at a standing stela
Alfred Maudslay on horseback and Annie Morris on muleback, Guatemala