Which company, founded in 1852 by the founders of American Express, became famous for its stagecoaches during the California gold rush?

What common term describes the bad guy in a play or novel? Which word means both "dull or commonplace" and "a person traveling on foot"? In the NATO phonetic alphabet, which code word comes between Alpha and Charlie? Company clerk Radar O'Reilly of "M*A*S*H" came from which state? Which company introduced the first Magnum revolver, the .357, in 1935? For much of the 20th century, which company was Delaware's largest private employer? Which company makes Ho Hos snack cakes? Which Handel oratorio, his most famous, first performed in 1742, has very little plot compared to his others?