Hardhat

1. Sixty Feet Below1958-01-04 2. Flooded Mine1958-01-11 3. Rapture of the Deep1958-01-25 4. Mark of the Octopus1958-02-01 5. The Sea Sled1958-02-08 6. Female of the Species1958-02-15 7. Mr. Guinea Pig1958-02-22 8. Sonar Queen1958-03-01 9. Gold Below1958-03-08 10. Recovery1958-03-15 11. Killer Whale1958-03-22 12. Midget Submarine1958-03-29 13. The Shark Cage1958-04-05 14. Hardhat1958-04-12 15. Continental Rift1958-04-19 16. The Poacher1958-04-26 17. Girl in the Trunk1958-05-03 18. The Sponge Divers1958-05-10 19. Diamond River1958-05-17 20. Alligator Story1958-05-24 21. Magnetic Mine1958-05-31 22. Underwater Patrol1958-06-07 23. Legend of the Mermaid1958-06-14 24. Pressure Suit1958-06-21 25. The Prospectors1958-06-28 26. The Hero1958-07-05 27. Underwater Station1958-07-12 28. The Lost Ones1958-07-19 29. Capture of the Santa Rosa1958-07-26 30. The Shipwreck1958-08-02 31. The Big Dive1958-08-09 32. The Birthday Present1958-08-16 33. Dead Man's Cove1958-08-23 34. Explosion1958-08-30 35. The Amphibian1958-09-06 36. Lord Christobal1958-09-13 37. Decoy1958-09-20 38. The Sea Has Ears1958-09-27 39. The Manganese Story1958-10-04