Musée de l'Homme
Soustelle developed an interest in Ethnology while working at the Musée de l'Homme under Paul Rivet. Rivet sent him to Mexico, after Soustelle became an Agrégé, to study the Otomi people. Soustelle wrote his first major book "Mexique, Terre Indienne" (Mexico is Indian) about his time with the Otomi.