Aria; "Artist Rights in America" New York: Grand Opera Artists' Association of America, October 1935

Aria; "Artist Rights in America" New York: Grand Opera Artists' Association of America, October 1935, Volume: Gilbert E17. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525203 Accessed December 27, 2025.