damn. you are good, amigo. There is a fallout sign on an old high school by me that I am going to get a picture of. It won't look quite as nice but like you I am intrigued by people's false perceptions during the cold war.
heh, this reminds me of when i worked in the state capitol, there were tunnels connecting the senate, house, services, and capitol builidng, and they were built in the 50's designed to be radiation shelters, the yellow signs embedded in the walls and in the stairwells, i always wanted to take one but i thought my job would go at risk for that, so i didnt.
anyhow, cool picture, i like how theres a newer sign accompanying it.