Card Catalog Mystery

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Across
  1. 1. horses
  2. 5. superheroes (irl)
  3. 7. mythology
  4. 10. circuses
  5. 11. internet
Down
  1. 2. shipwrecks
  2. 3. dinosaurs
  3. 4. presidential elections
  4. 6. stamp collecting
  5. 8. human anatomy
  6. 9. Milwaukee history