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 form]
9. [photographs by form: format]
10. card photographs (photographs)

Anotations

Scope note:

Card photographs, generally portraits, which measure 4 1/4 by 6 1/2 inches, including the mount. They were introduced by F. R. Window in 1867 as larger alternatives to the "cartes-de-visite," which measured 3 1/4 x 2 1/4 inches. The larger size was considered more appropriate for display, allowed for group portraits, and permitted the image to be retouched. The size remained popular until World War I.