Two pieces of 1970s propaganda for Libertarianism, an -ism I find perplexing.

A clip from the 1978 short, “Libra,” which imagined a 21st-century Libertarian space utopia, population 10,000, including its market-loving African-American leader. Um, wow.

This special version of 1975 film adaptation, The Incredible Bread Machine, is introduced by then-Secretary of the Treasury, William E. Simon, and features commentary by Milton Friedman and some of the book and film’s creators.

A really strange artifact, this 30-minute documentary directed by Theo Kamecke attempted to make Libertarianism sexy. The film’s writers (who appear onscreen as themselves) are six young, long-haired, hip proponents of the philosophy whose very presence sends the message that youth culture and free markets are not mutually exclusive. An incredible oversimplification of complex political and economic issues, the film contains the type of jaw-dropping anti-government propaganda that would give Ayn Rand a huge boner. But it’s still an odd and interesting remnant.