This 2016 episode covers a skeleton found in a tree near Birmingham, England in 1943. More than 70 years later, it's still unknown who the deceased was and how the body ended up in an elm tree.

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