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  1. The bones of the trunk
  2. Gas Station, Wild West Painting Series
  3. Laguna Agate
  4. Scanning electron micrograph of a human neutrophil ingesting MRSA
  5. Rhodochrosite Mineral From China's Wuton Mine
  6. Arthritis of the neck, X-ray
  7. Bonnie and Clyde
  8. Oil Pump Jacks On Canadian Prairie At Dusk, Carlyle, Saskatchewan, Canada
  9. John Coltrane Playing The Soprano Saxophone, 1960's
  10. Math Formulas On Chalkboard
  11. Normal spine, X-ray
  12. Oscar Wilde
  13. President John F. Kennedy and the First Lady in front of White House
  14. University of Virginia, Charlottesville, Virginia
  15. Oil well pump jacks at Bakken Oil Field near Estevan, Saskatchewan, Canada
  16. Tiny Engineers Fixing a Broken Chip on a Motherboard
  17. Plum Agate B
  18. Normal neck, X-ray
  19. Composite of 90 different species of parrots
  20. Normal spine, X-ray
  21. Scanning electron micrograph of Staphylococcus and a dead human neutrophil
  22. Wright Flyer sculpture at Wright Brothers National Memorial, North Carolina
  23. Grey Agate E
  24. Oil rig in the savannah of Wyoming
  25. Oregon. Close-up of Graveyard Point Plume Agate stone
  26. Sitting Bull - Lakota Sioux Tribe Chief, 1884
  27. Ruth Bader Ginsburg, Supreme Court of the United States portrait 2016
  28. Navajo weavers, c.1914
  29. Arthritis of the knee, X-ray
  30. The bones of the jaw
  31. Apache Men, c1906
  32. Hand doing math homework
  33. Grey Agate B
  34. Portrait Of Ida B. Wells Barnett, 1893
  35. Fortifications Agua Nueva Agate
  36. Close Ups Of Fortification On Crazy Lace Agate
  37. Australia, Northern Territory, Arnhem Land, Mt Borradaile, rock paintings
  38. Abraham Lincoln, 1809
  39. Pennsylvania, Gettysburg, Battle of Gettysburg, tree and battlefield monument, dawn
  40. Armillary sphere
  41. Van Gogh from Space - USGS Earth as Art
  42. Frank 'The Enforcer' Nitti
  43. How the Titanic Survivors Were Picked Up by the Carpathia
  44. Wilson Dam, Flood Gates
  45. Albert Einstein, 1879 - 1955, German Born Theoretical Physicist
  46. Normal hip, X-ray
  47. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  48. Scanning electron micrograph of HIV particles infecting a human H9 T cell