I have many of those links, and a few of those things in hardcopy. I don't expect a lot in the way of internet access when something hits the fan.

I picked up some civil defense stuff on e-bay after 9/11. It was leftover surplus from when the equipment used to be stored in local buildings and shelters all over America. Before it was decided that the idea that you might be able to survive a nuclear war was politicially incorrect. (Never mind natural disasters, or nuclear accidents, or anything else.)

Some of those shelters still have the old CD signs. But good luck now...they're empty.

On another board I was derided endlessly because I took a geiger counter with me in my van when I was travelling with my family through target zones on the first 4th of July after 9/11.