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. sculpture (visual works)
8. [sculpture by material]

Anotations

Scope note:

Objects, whether decorative or household items, carved from whale ivory, baleen, or similar materials from marine mammals. Originally specifically those objects made by whalers from whale teeth or baleen while on board ship.