Franklin D. Roosevelt's New Deal was recovery act in response to the Great Depression and like politics of today it had to be "sold" to the people. Posters were commonly used to generate support for many of the New Deal programs and agencies. Posters were also used to communicate the programs created for the people by the new agencies. Before the age of the internet and cell phones, posters were a common way to get a message out to the masses and if people didn't utilize the new programs created to stimulate the economy then nothing would change.
Credits
Viktoria Swerbensky