Michael C. A. Macdonald is an Honorary Fellow of Wolfson College, Oxford, and Fellow of the British Academy. He works on the languages, scripts and ancient history of Arabia and directs the Online Corpus of the Inscriptions of Ancient North Arabia (http://krc.orient.ox.ac.uk/ociana/). He has been working at Taymāʾ since 2010. Muhammad H. al-Najem headed for many years the Taymāʾ Antiquities Office of the Heritage Commission and its predecessors, which included the Taymāʾ Museum of Archaeology and Ethnography. He was the local cooperation partner of the Saudi-German joint archaeological project in Taymāʾ and has published on the archaeology and heritage of the oasis.