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 processes
8. albumen process

Anotations

Scope note:

The first photographic positive transparency process utilizing albumen-coated glass plates for making lantern slides. Introduced by Frederick and William Langenheim of Philadelphia in 1849. The process was also used for making large glass transparencies hung in windows as decorative works.