Slides of equipment and techniques used in Walter Moden's agricultural engineering research, many of which were invelted or developed by Moden. Topics include various types of seed planting machines, different types of tractors, and sprayers. Also included are slides of Moden's trip to Pakistan as part of an Irrigation Systems Management/Research project, and some of personal travels. Many of the slides are attributed to Moden.

Slides appear to have been removed from binders at an unknown time. Two sections contained no slides. It is unknown if they were misplaced during rehousing or if they were removed before materials were donated.