Color image of a corn root worm inside the tassel of a corn plant. U.S. Department of Agriculture, 2003.

Western corn rootworm

A corn root worm inside the tassel of a corn plant. U.S. Department of Agriculture, 2003.

Diagram of a grasshopper hatching. Published in University of Minnesota Extension Bulletin 194, revised June 1940.

Diagram of grasshopper hatching

Diagram of a grasshopper hatching. Published in University of Minnesota Extension Bulletin 194, revised June 1940.

Black and white photograph of highway trucks delivering grasshopper poison to farmers, 1938.

Highway trucks delivering grasshopper poison

Highway trucks delivering grasshopper poison to farmers, 1938.

Black and white photograph of WPA crew mixing grasshopper bait for distribution to farmers, State Highway Maintenance Shops at Hopkins, 1937.

WPA crew mixing grasshopper bait

WPA crew mixes grasshopper bait for distribution to farmers, State Highway Maintenance Shops at Hopkins, 1937.

Black and white photograph of WPA workers with grasshopper bait for distribution to farmers, 1937.

WPA workers with grasshopper bait

WPA workers with grasshopper bait for distribution to farmers, 1937.

Black and white photograph of Rachel Carson, biologist, conservationist, and writer, ca. 1930s.

Rachel Carson

Rachel Carson, biologist, conservationist, and writer, ca. 1930s.

Black and white photograph of grasshoppers waiting for the temperature to rise before moving into a corn field in Marshall, Minnesota, ca. 1930s.

Grasshoppers waiting for the temperature to rise

Grasshoppers waiting for the temperature to rise before moving into a corn field in Marshall, Minnesota, ca. 1930s.

Black and white photograph of a wall of a poorly kept flour mill with accumulations of flour webbed by a flour moth. U.S. Department of Agriculture, 1913.

Flour-moth-infested mill

Portion of a wall of a poorly kept flour mill with accumulations of flour webbed by a flour moth. U.S. Department of Agriculture, 1913.

Black and white photograph of Otto Lugger, University of Minnesota professor, author, and State Entomologist, ca. 1895.

Otto Lugger

Otto Lugger, University of Minnesota professor, author, and State Entomologist, ca. 1895.

An illustration of an adult female locust placing her eggs in soil, 1877.

Rocky Mountain Locust oviposition (egg-laying process)

An illustration of an adult female locust placing her eggs in soil, 1877.

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