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Frog Observations

Jefferson wrote down when he first heard frogs to keep track of the seasons. Use this chart to compare when Jefferson first heard frog calls throughout his years of observations.

Visualizations & Exhibits

  • Vegetable Market Chart
  • Plant Observations
  • Bird Observations
  • Jefferson's Barometric Data Observations
  • Jefferson's Temperature Records: Maximum and Minimum Temperatures
  • Frog Observations
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The Papers of Thomas Jefferson

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