A famous 1936 radio speech by which man began "At long last I am able to say a few words of my own"?

A famous 1793 painting by Jacques-Louis David depicts which assassinated Frenchman in his bathtub? A 1794 treaty resolving disputes between the U.S. and Britain is named for which chief justice who negotiated it? Which name belongs to both a famous 1914 W.C. Handy composition and Missouri's NHL team? A famous 1924 campaign slogan was "Keep Cool with..." whom? A famous ad campaign that began in 1967 told folks that which soft drink was "the Uncola"? A famous landscape painted around 1595 by El Greco shows a view of which Spanish city? Which famous dance partner was born Virginia Katherine McMath? Which famous D.C. address was the title of a 1976 Lerner and Bernstein musical that flopped?