Buffalo Bill and the Pony Express

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Across
  1. 1. Last stop on the Pony Express
  2. 6. Fastest way to send mail
  3. 8. Bill Cody's horse
  4. 9. They attack Bill on the trail
Down
  1. 2. Bill's Souix friend
  2. 3. Outlaw Tod's nickname
  3. 4. Buffalo Bill's last name
  4. 5. Bill's home station
  5. 7. The head of the dummy rider