Which labor leader, born on February 14, 1913, mysteriously disappeared in 1975?

Which Australian bird, famous for its laughing call at dawn and dusk, is called "the bushman's clock"? Which Greek playwright, author of "The Birds," is known as the father of comedy? Mary, Queen of Scots, born at Linlithgow Palace on December 8, 1542, belonged to which royal house? Which president, born February 9, 1773, was a Whig famed for his victory at the Battle of Tippecanoe? Bismarck is the capital of which U.S. state? Bismarck, North Dakota, lies on which river? "Bitter Fame," a controversial 1989 biography by Anne Stevenson, deals with which poet? Which word means bitterness or resentment in speech or attitude?