Browse Items · Iowa Heritage Digital Collections

Man stands in clover field

An unidentified man wearing a hat stands in a clover field by scrub trees

A group of students stand beside a bus from the University of Northern Iowa waiting for a tour

These three photos show soil erosion from flooding

These photos show the erosion of a stream bank caused by wind and water.

These photos show erosion of the soil caused by wind and rain

Shown is a field of no-tillage corn

This sign says that a building permit needs to be obtained before any more work can be done on this site

District conservationist Howard Bright and another unidentified man study something on a paper outside a garage

These two unidentified men are using a machine to collect soil samples in a field

These posters show that top soil loss affects crop productivity