I came across these illustrations giving a backstage look at the opera Aïda. It is a French production from 1880. Even though it is over 135 years ago, some things still look the same.
Originally from: Aïda, vue des coulisses de l’Opéra. (L’illustration, v.76, Oct. 30, 1880, p. 283-286; illus. on p. 292.)