According to a 1782 explanation of the Great Seal, which three colors stand for valor, purity and vigilance?

By the 1976 Olympics, which muscle-building drugs had been banned for Olympic competitors? By 1980, a global vaccination effort had eradicated which disease, the first human disease ever wiped out? In 2003, which energy source produced about 20 percent of U.S. electricity at plants like Palo Verde in Arizona? In 1924, the Kansas City Monarchs won the first Negro League version of which championship, 5 games to 4? In 1948, the UN General Assembly adopted, with no votes against, a Universal Declaration of what? By an act of Congress in 1954, Armistice Day was renamed what? In 1938, a South African trawler caught which "living fossil" fish that had been thought extinct for millions of years? Complete the phrase meaning "by any means possible": "By ___ or by crook."