"Three Cool Things, Two Births, Two Deaths on Your Birthday"
1785 - The dollar is unanimously chosen as the monetary unit for the United States.
1885 - Louis Pasteur successfully tests his vaccine against rabies. The patient is Joseph Meister, a boy who was bitten by a rabid dog.
1957 - John Lennon and Paul McCartney of The Beatles meet for the first time at the Woolton Parish Church Garden Fete, Liverpool.
1901 - Louis Armstrong, Famous Musician (d. 1971)
1907 - Frida Kahlo, Mexican painter (d. 1954)
1535 - Sir Thomas More, English writer and philosopher (executed) (b. 1478)
1971 - Louis Armstrong, American musician (b. 1901)
Edit Apparently it's "Three Cool Things, Two Births, one Death on Your Birthday"
Or something like that. Oh, well. Would probably have kept Louis in both anyway.