In 2016, Secretary of Education Dr. John B. King Jr. joined Tracy to discuss the Preliminary Emancipation Proclamation, which gave rebelling states 100 days to return to the Union or have their enslaved population freed during the U.S. Civil War.

Robert Moses and the Shaping of New York, Part 2
42:12

Robert Moses and the Shaping of New York, Part 1
41:59

SYMHC Classics: Eradication of Smallpox
43:25