Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Visual Works (hierarchy name)
5. visual works (works)
6. [visual works by material or technique]
7. photographs
8. [photographs by technique]
9. [photographs by processing or presentation technique]

Anotations

Scope note:

Prepared sets of photographic images, sold for viewing in an accompanying viewing instrument, the kromscop, that accurately combined and projected three-separation color images. The individual images were photographed and re-presented through color filters. These images were also frequently stereographic. This was of particular importance in the development of full-color projection. Developed by Frederic Eugene Ives. Some of these early prints are preserved in the Smithsonian Institution, Washington, D.C.