State Library of Iowa
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Browse Items (406 total)
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Experiment 315, representative pig #205, 1929
The left side of representative pig #205 is shown for experiment 315 lot #5.
Experiment 326, representative pig #9B, 1930
The right side of representative pig #9B is shown for experiment 315 lot #3.
Moving and windrowing grass
An individual is driving a Ford tractor and attached farm machinery along the edge of a field moving and windrowing the grass. The tractor dates from the late 1930s.
Working in the fields
An individual is driving a tractor and attached implement through a field. A barn and various other outbuildings are in the background.
Researcher working with test tube samples
A researcher places test tubes filled with samples into an open piece of laboratory equipment. A similar, but closed piece of equipment is also sitting on the table.
Researcher adjusting equipment
A researcher adjusts dials on a laboratory apparatus that consists of various pieces of connected metal tubing. There is also a coil of wire immersed in a liquid filled beaker. A log book lies open on a stand to the right of the machinery.
An individual drives a tractor and combine along the edge of field harvesting corn.
Corn picker 227
An individual drives a 227 corn picker along the edge of a corn field. The harvested corn is being placed into a wheeled hopper.
A monoplane, flying low over a field of corn, is spreading powered pesticide. The plane's wheels are almost touching the tops of the plants. A row of trees is in the background.
Compacting grass silage with ""cat"" tractor in pit silo
An individual is using a ""cat"" tractor to compact grass silage into a pit silo. Another worker waits nearby holding a pitchfork. An International Harvester Farmall tractor is also present.