United States v. Bhagat Singh Thind was a 1923 case that hinged on what it meant to be white.
Research:

E. Virgil Neal: Hypnotist, Fraudster, Tycoon - Part 1
35:28

SYMHC Classics: Mancini Sisters
42:22

Behind the Scenes Minis: The Apostrophe and the Rich Guy
27:51