Un ballo in maschera
Act 1 (l. to r.): Riccardo, Oscar (on platform)
extreme right: Tom, Samuel
Mus. Arc. 3.1
LeBlang, Sedge and Perry, J. Warren, “Un ballo in maschera,” Digital Collections - University at Buffalo Libraries, accessed March 6, 2021, https://digital.lib.buffalo.edu/items/show/8196.