'ISLE 30.4 opens with the 2023 ASLE Graduate Student Essay Award Winner Minh Vu’s “Containers of Care: Cardboard and the Corrugated Construction of War.” This essay focuses on cardboard boxes and their material culture, from their use for meal kits and baby bassinets in Operation Babylift at the end of the US–Vietnam War to their existence as objects rife with imperfections and thus transient and subject to decay in modern-day shipping ports and Amazon warehouses.' (Editor's Note introduction)