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  1. iPod Patent Blue
  2. Brewery kettle, 19th century
  3. Telephone Technician
  4. Triger's caisson, 19th century
  5. Lights bulbs shining in the darkness.
  6. Railway signalman, 19th century
  7. Rainhill Trials steam trains, 1829
  8. Napier Lion Engine
  9. insert
  10. Metal Coils II
  11. Woman watching a German television with a 14 x 18 centimeter screen
  12. Telephone switchboard operator, 1914
  13. delete
  14. Jonathan Hulls' steamboat, 18th century
  15. Vintage Rotary Phone
  16. Drawing of an armillary sphere
  17. Oscilloscope showing voltage/time trace
  18. Vieques, Puerto Rico, A laptop is sitting in the middle of an unmade hotel bed
  19. 19th Century Electric Telegraph Equipment
  20. The British Telephone Exchange In London, 1883
  21. Utility pipes, artwork
  22. 17th Century fire fighting, artwork
  23. backspace
  24. Solar power plant, Cala San Pedro, Spain
  25. Workers in airplane hangar
  26. Radio Technician
  27. Channel Hopper
  28. Oil refining process
  29. Men Watch Oil Gusher
  30. Recording thumbprint
  31. Telecommunication Towers near Bulls Head, Dingle Peninsula, County Kerry, Ireland
  32. Control panel
  33. 19th Century amphibious vehicle, artwork
  34. Steam Engine
  35. Computer monitor
  36. Personal organizer, glasses, newspaper and laptop on desk
  37. Painting of a Weather Satellite
  38. Oscilloscope trace
  39. Old Technological Hardware
  40. Computer and mouse with flora design
  41. Smartphone Man, 2012
  42. Turning the Desert into a Land of Plenty, illustration from 'Mighty Machines', 1980
  43. iPod Patent Buff
  44. Wind turbine
  45. Mechanical Elements
  46. Gaulard transformer, 19th century
  47. Edison talking into his phonograph
  48. Parkes radio telescope at night, Parkes, NSW, Australia.