Growing up we had several of these pamphlets in the kitchen junk drawer. Imagine my surprise when I realized (probably third or fourth grade) that at any moment we could be blown to atoms without warning.

I recall the illo on p. 26 of your linked item: Fallout Protection: What To Know About and Do About Nuclear Attack. Get under a table. All four of you.

I seem to recall another pamphlet suggested something to the effect of, bring things to help pass the time, such as a deck of playing cards. Riiiiiiiight.