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  1. Medical zodiac, 15th century diagram
  2. Normal wrist, X-ray.
  3. Shooting An Oil Well
  4. 19th Century electrical equipment
  5. Star trails and bioluminescence, Gippsland Lakes, Australia
  6. Idaho - USGS State Mosaic
  7. Male reproductive system, artwork
  8. Bees - Vintage Educational Poster
  9. Global Circulation Patterns Diagram
  10. Running On The Wind
  11. Blood types, conceptual image
  12. Heart anatomy, 18th century
  13. Bogda Mountains - USGS Earth as Art
  14. Artwork of Caudipteryx sp., a bird-like dinosaur
  15. Oklahoma - USGS State Mosaic
  16. Forensic evidence
  17. Diphtheria treatment, artwork
  18. Donati's Comet of 1858, artwork
  19. Geography of the Heavens VI
  20. Human spine, side view
  21. Stem cell, conceptual artwork
  22. Explorer 1
  23. Scanning electron micrograph of an apoptotic HeLa cell
  24. Ice Stars - USGS Earth as Art
  25. Astronomical Chart I
  26. Patent--Sewing Machine
  27. Sets of fingerprints
  28. Cretaceous dinosaurs
  29. Conceptual image of platelets with red blood cells
  30. Computer memory chips
  31. Pollen grains, SEM
  32. Anterior view and sagittal view of female urinary bladder
  33. Sea salt, SEM
  34. Instruments for removing bladder stones
  35. The analysis of sound frequencies by the basilar membrane
  36. Oregon, Owyhee. Close-up of picture jasper stone
  37. Dragon Lake - USGS Earth as Art
  38. Minnesota - USGS State Mosaic
  39. Geranium (Pelargonium sp.) leaves
  40. Shame may be Fatal - WPA Poster
  41. Confidence of Alexander the Great into his physician Philippos, 1870
  42. Cold War medical training, 1958
  43. Oregon. Close-up of Owyhee Picture Jasper stone
  44. Male muscle anatomy of the human back
  45. View looking from inside the mouth while at the dentist
  46. Vermont - USGS State Mosaic
  47. Calcium phosphate crystal, SEM
  48. Artwork of drug transmission to brain nerve cell