A Postman in Northern Ireland, Outposts of Britain. Affiche, PHI-W-000000000233. Philemone, version publique 1, publiée le 2026-10-10. https://philemone.com/affiches/PHI-W-000000000233/a-postman-in-northern-ireland-outposts-of-britain (consulté le 2026-10-29).