René Quinton et Louis Barthou, Issy-les-Moulineaux, 7 septembre 1908 (Agence Rol, BnF)

Press photograph by Agence Rol, 7 September 1908, Issy-les-Moulineaux, France. The archive caption reads: 'M. René Quinton et Louis Barthou, Issy-les-Moulineaux, 7 septembre 08.' Both attended aviation demonstrations by the pilot Delagrange. Louis Barthou was a French politician (then Minister of Public Works). Dimensions: 1,024 × 1,452 pixels. Held by the Bibliothèque nationale de France (Estampes et photographie, Gallica). Public domain per BnF. Identification basis: the archive title and caption name both subjects; the image does not itself specify which figure is on the left or right. A systematic search of the four supported archives (Wellcome, LoC, BnF/Gallica, Wikimedia Commons) on 2026-06-27 yielded only aviation-context photographs of Quinton; no images of his marine dispensaries, laboratory equipment, or Sérum de Quinton preparations were found in those archives.