Someone put in an FOI request to the National Security Agency (NSA) security/motivational posters from the 1950s and 1960s, and it’s utterly brilliant insight into the paranoia of the past, and how 60 years later, not much has really changed!
Click for larger images
The full list of posters are available on the Government Attic website. Government Attic provides electronic copies of thousands of interesting Federal Government documents obtained under the Freedom of Information Act
http://www.governmentattic.org/28docs/NSAsecurityPosters_1950s-60s.pdf
