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.
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.
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.
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.
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.
