Which scientist, whose polio vaccine was announced as safe and effective in 1955, said his mother had lived her ambitions through her children?

Which lake, the largest in Africa, is the main source of the White Nile? Which large ocean liner, docked in Long Beach, California, since 1967, now serves as a hotel and tourist attraction? Which lawyer and author clerked for Supreme Court Justice Arthur Goldberg in 1963? Which man, who began leading the Federal Reserve in 1987, had studied clarinet at New York's Juilliard School? Which aviation pioneers, whose name is on an Ohio Air Force base, also opened a flying school on the site of Alabama's… Abu Bakr, who became the first Muslim caliph in 632, was the father-in-law of whom? Which Montgomery seamstress had been put off a bus by the same driver years before her famous arrest on December 1, 195… Which newsman's memoir "A Life on the Road" was a bestseller in 1990?