Subseries VIII.A. Slide transparencies, by region. 1942-1968. This subseries is predominantly made up of Kodachrome and Ektachrome slide transparencies from Kellogg's travels in America and overseas. Also included are shade prints constructed from a few of the slides. Topics depicted include things like: soils; landscape options; agriculture; people and culture, https://lorenzo1o89a.bloggactif.com/32838969/helping-the-others-realize-the-advantages-of-soil-survey-methods