Which 1908 song, traditionally sung during baseball's seventh-inning stretch, ranks among the most performed songs in the U.S.?

In 1990, the U.S. Postal Service issued stamps honoring four classic films from 1939. Which of these was one of them? Which man lost the 1796 presidential race to John Adams but beat Aaron Burr in 1800? Native American men including Iron Tail posed for the portrait on which U.S. coin first minted in 1913? T-800 and T-1000 are model numbers of which movie robots? Japanese mirin and sake are both types of what? Which composer had two big hits in 1889 with the marches "The Thunderer" and "The Washington Post"? Two old Quakers, Captain Peleg and Captain Bildad, are part owners of the Pequod in which 1851 novel? Two panels of the Ghent Altarpiece by brothers Jan and Hubert were stolen in 1934. What is their surname?