Thomas J. Dorsey liberated himself from enslavement and became one of the most sought-after caterers in Philadelphia. His son William Henry Dorsey was born a free Black man before the Civil War, and became an artist, collector and scrapbooker.
Research:

SYMHC Classics: COINTELPRO 1
39:12

Behind the Scenes Minis: It's Not Unprecedented
16:46

The Rendition of Anthony Burns, Part 2
43:32