Presidential Cryptic

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Across
  1. 4. 20th pres
  2. 6. nomad is on
  3. 7. first president
  4. 11. 38th pres
  5. 12. no sir, rahab
Down
  1. 1. mice or no mice
  2. 2. 27th pres
  3. 3. seventh president
  4. 5. plasma dances
  5. 8. some psycho
  6. 9. component of plush
  7. 10. peg ran towards