Auspices, before and during the reading of the death symbols Extispicium relief, Forum of Trajan. Louvre, http://ancientrome.ru/art/artworken/img.htm?id=4694 Joseph Antoine Callet, “Nungesser et un de ses mécaniciens.” Bibliothèque nationale de France, https://www.europeana.eu/en/item/2020601/https___1914_1918_europeana_eu_contributions_11295_attachments_115062. Detail restored.
