pdotb quoted Hayek's Bastards by Quinn Slobodian
As one person involved wrote, "the mid-1970s witnessed a tremendous increase in 'hard money' books, newsletters, seminars, coin companies, survival retreats, food storage, and related businesses. The mixture of topices is captured in an issue of Libertarian Review from 1976. It included selections from German neoliberal economist Wilhelm Röpke alongside advertisements for a cassette program on "basic relaxation and ego-strengthening" by Ayn Rand's designated heir Nathaniel Branden and fine print offerings of "survival information" from Inflation Survival Letter.
— Hayek's Bastards by Quinn Slobodian (Page 133)