International audienceThe site of Samarra in Iraq was the capital of the Abbasid caliphate between 836 and 892. The first excavations of the site between 1910 and 1913 were carried out by Henry Viollet and then Ernst Herzfeld, who gathered a large amount of archival and artistic material. Documentation and excavation material have since been dispersed. They remain largely unpublished and make it possible to study the site despite the inaccessible terrain. This unpublished material must be gathered and cross-referenced to complete our knowledge of the site and, more broadly, to write the history of art of the first centuries of Islam. The archaeological and archival data and the material now in museums allow us to understand Abbasid life and...