THE 5-SECOND TRICK FOR SOIL SURVEY METHODS

Subseries VIII.A. Slide transparencies, by country. 1942-1968. This subseries is predominantly made up of Kodachrome and Ektachrome slide transparencies from Kellogg's travels in the United States and overseas. Also bundled are coloration prints comprised of some of the slides. Subjects depicted involve: soils; landscape functions; agriculture; peo