Lauren Rousseau, age 30
Mary Sherlach, age 56
Victoria Soto, age 27
Sources: The Associated Press, The Guardian
Enrique Castro-Mendivil / Reuters
St. Louis nearly burns to the ground, the first Kentucky Derby is held, the Supreme Court strikes down segregated schools, the Senate Watergate Committee begins televised hearings, and same-sex marriages begin in Massachusetts, all on this day.