Subjects
- Librettos (documents for music)1
- Licenses1
- Newsletters1
- Notebooks1
- Opera1
- Opera -- Illinois -- Chicago1
- Opera -- Massachusetts -- Boston1
- Opera -- United States -- 20th century1
- Operas -- Librettos1
- Operas -- Scores1
- Pamphlets1
- Payrolls1
- Performing arts -- New York (State) -- New York1
- Photographs1
- Playbills1
- Posters1
- Programs (documents)1
- Receipts (financial records)1
- Renderings (drawings)1
- Sound recordings1