Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (150 total)

Dr. Bockhop and students observing a tillage system with a model tractor, 1957

Dr. Bockhop and students observing a tillage system with a model tractor, 1957

Dr. Clarence Bockhop (left) and two students observe a plain tillage linkage system with a model tractor.
Instructor teaching a group of students about a tractor, 1957

Instructor teaching a group of students about a tractor, 1957

An instructor explains the front mechanics of a tractor to six students in a laboratory with five other tractors.
Students observing a tractor cultivating a field, 1957

Students observing a tractor cultivating a field, 1957

Thirteen students observe someone driving a tractor and cultivating a field.
Four students studying a tractor equipped with a seed spreader, 1957

Four students studying a tractor equipped with a seed spreader, 1957

Four students study a piece of farm equipment, a tractor equipped with a seed spreader.
Dr. Bockhop working on soil bin similitude studies, 1957

Dr. Bockhop working on soil bin similitude studies, 1957

Dr. Clarence Bockhop experiments with grading sand in the soil bin using scale model implements and similitude principles to study soil-tool interaction.
Professor Johnson and three students investigating water hydrant fixtures, 1957

Professor Johnson and three students investigating water hydrant fixtures, 1957

Professor Howard Johnson helps one student adjust a water hydrant fixture, while two others observe in a lab class about sprinkler irrigation equipment.
Agricultural engineering student using an engineer's transit, 1957

Agricultural engineering student using an engineer's transit, 1957

Agricultural engineering student Kent Mitchell uses an engineer's transit in soil and water conservation work.
Engineering student adjusting a surveyor's transit, 1957

Engineering student adjusting a surveyor's transit, 1957

Agricultural engineering student Roderick Hall adjusts the surveyor's transit one step in the engineering control of soil and water resources.
Three students working on a project in the Hydraulics Lab, 1957

Three students working on a project in the Hydraulics Lab, 1957

Three students work on a project in the Hydraulics Lab.
Student studying the stilling basin of a chute model, 1957

Student studying the stilling basin of a chute model, 1957

Bob Davis studies the stilling basin of a chute model which is used in soil erosion control.
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