A 1974 U.S. stamp showed the Headless Horseman pursuing Ichabod Crane from which tale?

A 1974 biography of which photographer is titled "Mr. Lincoln's Camera Man"? A 12th-century Japanese scroll illustrates which classic tale by Lady Murasaki? In a 1974 referendum, Greece voted to abolish which institution? A 1974 spy scandal ended Willy Brandt's career as chancellor of which country? A 1974 tornado destroyed about half of Xenia, a city whose name means "hospitality", in which state? Which inventor gave the world a code of dots and dashes that could carry messages electrically? Which 1975 Robert Altman film centers on a music festival and political rally in its title city? Which 1975 thriller was directed by Steven Spielberg with music by John Williams?