I remember in the 60’s the gubermint sent out a questionnaire, which you sent back and in return, they sent you a recommended fallout shelter plan for your home. I wonder if anyone still ha theirs.
My apartment building had a fallout shelter in it, with the CD sign and fallout sign proudly presented. I remember asking the super of the building if this should be underground as well as a bunch of other questions.
My parents told me later that day to stop bothering the super.