Friday links

June 30, 1934 was the Night of the Long Knives, Hitler's purge of those standing in his way.

How the Second World War Made America Literate.

News you can use: How To Tell If You've Been Abducted By Aliens.

How tree trunks are cut to produce lumber with different shapes, grains, and uses.

The Uniquely Texan Origins of the Frozen Margarita.

Dancing at the Lunatic’s Ball at the  New York City Lunatic Asylum on Blackwell’s Island.

ICYMI, Thursday's links are here, and include DARPA's re-invention of the wheel, DIY V-steaming instructions, chocolate chip cookie science, and the anniversary of both the event that started World War One and the treaty that ended it.