By the time the USA had entered #WorldWarII, #poster #PSA messaging shifted toward how you, as a non-enlisted citizen, could help the country and your community. So, posters about carpooling to save resources became commonplace (re: the image is saying that you’re helping Hitler win if you don’t rideshare), as did posters instructing women to save cans for ammunition or kitchen grease for explosives.
1. When You Ride Alone, Weimer Pursell, 1943.
2. Save Your Cans, McClelland Barclay, 1943.