Subseries VIII.A. Slide transparencies, by region. 1942-1968. This subseries is predominantly composed of Kodachrome and Ektachrome slide transparencies from Kellogg's travels in the United States and abroad. Also involved are shade prints comprised of many of the slides. Subjects depicted include things like: soils; landscape functions; agriculture; persons and tradition, https://messiah7y12f.blog-ezine.com/31874014/what-does-soil-survey-mean