Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. [image-making processes and techniques]
6. [photography and photographic processes and techniques]
7. photographic techniques
8. [photographic processing and presentation techniques]

Anotations

Scope note:

Color and stereoscopic relief process patented by John Bishop Hall of New York in 1856. Two similar prints were used, one made transparent with dammar varnish, the other painted with washes of color. The transparent print was registered on top of the painted one and the two bound together with a glass and backing.