To Kill a Mockingbird Characterization Clues

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Across
  1. 3. Scout says that this character must have been the lonliest person in the world.
Down
  1. 1. "His neck was dark gray, the backs of his hands were rusty, and his fingernails were black deep into the quick."
  2. 2. A white man who prefers the company of blacks.
  3. 4. "...remember, it's a sin to kill a mockingbird."