At a young age, Alexis Soyer became a very well-known chef in both France and England, as popular for his fun personality as for his cooking. But he also left a legacy of invention and charity.
Research:

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