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Plants as Modified by Man

George Washington Carver's Iowa State Bachelors Thesis

George Washington Carver's Iowa State Bachelors Thesis

Populus tremuloides (Aspen) specimen (black and white), including flowers and leaves, identified as negative 469

Populus tremuloides (Aspen) specimen (black and white), including flowers and leaves, identified as negative 469

Prairie section (black and white)

Prairie section (black and white)

Prairie near Lime Springs (Howard County) (handcolored)

Prairie near Lime Springs (Howard County) (handcolored)

Prairie bordering Lost Island Lake (Ruthven, Iowa) (handcolored)

Prairie bordering Lost Island Lake (Ruthven, Iowa) (handcolored)

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