Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. glass (material)
8. [glass by technique]
9. pressed glass

Anotations

Scope note:

Distinctive pressed glass of various colors produced by the Boston Sandwich Glass Company. For double-wall glass objects with inner decoration of engraved gold leaf, use "gold glass (visual works)," having the UF "sandwich gold glass (visual works)."