Here’s an item from the photo page of the January 7 1925 edition of the Toronto Daily Star:
Lucrezia Bori (1887-1960) was a lyric soprano, but was also a great fundraiser: in 1932, at the peak of the Great Depression, she organized a committee to raise money to save the Metropolitan Opera. She retired from singing at the Met in 1936.
YouTube has a number of links of her singing, including this one of Ms. Bori and Joseph Bentonelli singing La Bohème in 1937. (Trivia note: the symphony orchestra in this performance was conducted by Otto Klemperer, the father of Werner Klemperer of Hogan’s Heroes fame.)