Subseries VIII.A. Slide transparencies, by country. 1942-1968. This subseries is predominantly composed of Kodachrome and Ektachrome slide transparencies from Kellogg's travels in America and abroad. Also incorporated are color prints comprised of many of the slides. Topics depicted include: soils; landscape functions; agriculture; persons and culture, especially rural everyday living; https://jasper2n78u.bleepblogs.com/32285494/considerations-to-know-about-soil-survey-methods