history 7

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Across
  1. 3. Avenue became synonymous with advertising (1950s).
  2. 5. Billie, legendary jazz singer, died (1959).
  3. 7. J.D. Salinger's "The Catcher in the Rye" published (1951).
  4. 9. Italian sports car manufacturer established (1950s).
Down
  1. 1. Fiberglass became widely used in manufacturing (1950s).
  2. 2. Yuri, first human in space (1950s).
  3. 4. Khrushchev became leader of the Soviet Union (1953).
  4. 5. Hugh, founder of Playboy magazine (1953).
  5. 6. Rock and roll music exploded in popularity (1950s).
  6. 8. First confirmed successful ascent (1953).