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  1. Tuberculosis, Don't Kiss Me!: Your Kiss of Affection, the Germ of Infection - WPA Poster
  2. Travels Around the World
  3. Normal spine, X-ray
  4. Taking Off..., illustration from 'Wings Across the World', 1978
  5. Oil well pump jacks at Bakken Oil Field near Estevan, Saskatchewan, Canada
  6. General Philip Kearny's fatal charge at the Battle of Chantilly
  7. World War I, Map, c1919
  8. Vintage Civil War print featuring the Battle of Gettysburg
  9. The Birth of Rostam by Caesarean. Shahnameh. The Book of Kings. 16th c. Persian Art
  10. Earth
  11. Wisconsin - USGS State Mosaic
  12. The bones of the head, neck and face
  13. Blood clot, SEM
  14. Paris at Thermopylae
  15. Interiors of a library, Peabody Institute, Johns Hopkins University, Baltimore, Maryland
  16. Akpatok Island - USGS Earth as Art
  17. The Optimist - USGS Earth as Art
  18. Full on view of a Woolly Mammoth
  19. Bogda Mountains - USGS Earth as Art
  20. A Garland For May Day 1895 Dedicated To The Workers By Walter Crane
  21. Faridun's Sons Marry the Three Daughters of Sero. Shahnameh. The Book of Kings
  22. Washing Gold, Calaveras, California, 1853
  23. George Washington, by Gilbert Stuart, 1821
  24. Orbits of Earth Crossing Asteroids
  25. Vintage Civil War poster of the Battle of Missionary Ridge
  26. New Mexico - USGS State Mosaic
  27. Cartilage cells, TEM
  28. Alternating Motor - Blue
  29. The sun sets behind a row of spinning windmills or wind turbines
  30. Black Hole Singularity Diagram
  31. Battle Of Gettysburg, 1863
  32. Lion and Gladiator
  33. Montana - USGS State Mosaic
  34. The Rape of Europa
  35. Abraham Lincoln (1809-65) plans his campaign during the American Civil War (1861-65)
  36. Manuscript Of Fifteenth Amendment To The Constitution
  37. Colours That Reflect Joy
  38. Native Americans Bringing Furs To Dutch Traders
  39. Official White House Portrait Of George H. W. Bush By Herbert Abrams
  40. The bones of the pelvis
  41. Normal knee, X-ray
  42. The Nine Year Siege of Troy
  43. Portrait of naturalist and geologist Charles Darwin
  44. Development of Arabic numerals
  45. Brain antomy, 19th century artwork
  46. Brooklyn Window #25
  47. Dragon Lake - USGS Earth as Art
  48. Conceptual image of DNA