Visuals

  • Growing pastures (Illustrating beneficial effects of superphosphates) [Better Farming Train Album]
  • Wheat and Super Haulage - 1950's Style
  • CO 1069-259-21
  • CO 1069-259-20
  • CO 1069-259-19
  • CO 1069-259-22
  • CO 1069-259-69
  • CO 1069-259-68
  • CO 1069-259-67
  • CO 1069-259-66
  • Turnips grown in Tillamook County using superphosphate and manure, 1920
  • CO 1069-211-18
  • the graveyards of superphosphates