The guide itself was submitted here: https://news.ycombinator.com/item?id=48876737

There are a few editions of this guide, apparently, and the most recent is a 2022 edition, but it contains most information of the older editions but might have a newer foreword.

https://en.wikipedia.org/wiki/Nuclear_War_Survival_Skills

This is the 2022 edition linked from Wikipedia: https://link.us1.storjshare.io/s/jxoqtjnsv35pbrrndvy3gifrqqo...

Here is a html version of the book that has clickable chapter links and so forth: https://www.oism.org/nwss/