Ñañíguismo, the Abakuá

An initiatory society tracing its pre-colonial origins to present-day southeastern Nigeria, the Abakuá have contributed an immense non-verbal and kinematic vocabulary to popular modes of gestural expression in Cuba and throughout the Americas.

Heron of Alexandria and Heron's Windmill

Greek inventor and geometer Heron of Alexandria described a menagerie of mechanical devices, air- and hydraulic-operated machines—and explored the utilization of steam as a motive power in the book(s) Pneumatica. Heron’s work re-appeared in translation, in 1899, when German engineer Wilhelm Schmidt published the now standard text Herons von Alexandria Druckwerke und Automatentheater : Pneumaticaet Automata. 

Martin Luther King Jr. and "Beyond Vietnam"

Historian, professional bibliophile, and Antiquarian Booksellers' Association of America member Frank Xavier Deodene recounts a conversation in April 1967 with philanthropist and civil rights movement supporter Lawrence MacGregor, a former president of the Summit Trust Company.