THE 5-SECOND TRICK FOR SOIL SURVEY METHODS

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 involved are shade prints made from a lot of the slides. Topics depicted include things like: soils; landscape features; agriculture; folks and t