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cotton gin- Eli whitney
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iron plow-tomas jefferson
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grain reaper-cyrus mccormick
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seed planter-henry blair
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barb wire-joseph glidden
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cotton planter-henry blair
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steel moldboard plow-john deer
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corn picker-edmund quincy
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milking machain-anna baldwin
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perishable food preservation-thomas elkins
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soil improement and crop rotation-george washington carver
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tractor-ben holt
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smith hughes
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ffa became a national organisation
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creed adopted
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federal charter received
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ffa and nfa merged
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girls were allowed in ffa for the first time
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gene gun-johon sanford
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name change
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robotic milking machines
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tractor base gps technology