1. 6 June 1944 date of the Allied landing in France, World War II
  2. Aaron's rod tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches
  3. 'tween decks in the space between decks, on a ship
  4. 12-tone music a type of serial music introduced by Arnold Schoenberg
  5. 18-karat gold an alloy that contains 75 per cent gold
  6. 22-karat gold an alloy that contains 87 per cent gold
  7. 24-karat gold 100 per cent gold
  8. Abelian group a group that satisfies the commutative law
  9. 12-tone system a type of serial music introduced by Arnold Schoenberg
  10. 15 August 1945 the date of Allied victory over Japan, World War II
  11. 16 PF a self-report personality inventory developed by Raymond B. Cattell to measure the 16 personality dimensions that emerged from his factor analysis of a wide range of traits
  12. 1st-class mail mail that includes letters and postcards and packages sealed against inspection
  13. A. Conan Doyle British author who created Sherlock Holmes (1859-1930)
  14. A. E. W. Mason English writer (1865-1948)
  15. Aaland islands an archipelago of some 6,000 islands in the Gulf of Bothnia under Finnish control
  16. Aberdeen Angus black hornless breed from Scotland
  17. 1st Earl Attlee British statesman and leader of the Labour Party who instituted the welfare state in Britain (1883-1967)
  18. A. Noam Chomsky United States linguist whose theory of generative grammar redefined the field of linguistics (born 1928)
  19. ASCII text file a text file that contains only ASCII characters without special formatting
  20. 24-hour interval time for Earth to make a complete rotation on its axis

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