1941 Birthday Jan Berry, born in Los Angeles, California, rock vocalist, Jan and Dean-Deadman's Curve 1870 Event Fred Goldsmith demonstrates curve ball isn't an optical illusion 1849 Death Pierre F Verhulst, Belgian mathematician (logistic curve), dies at 44 1848 Birthday William "Candy" Cummings, created curve ball 1804 Birthday Pierre F Verhulst, Belgium, mathematician, logistic curve
