found: Her Mémoires, 1954.
found: Grove music online, 15 July 2013(Held, (Helena) Anna, b. Warsaw, Poland, 8 March ?1873, d. New York, NY, 12 Aug. 1918; American singer of Polish birth)
found: Golden, E. Anna Held and the birth of Ziegfield's Broadway, 2000:p. 3 (Anna Held's birthdate and hometown are a dark mystery; theatrical history books claim she was born in Paris on March 18, 1873; no birth certificate exists, but a careful look at Anna's early career suggests she was born closer to 1870; her gravestone reads 1872)
found: Wikipedia, 15 July 2013(Anna Held, Helene Anna Held, b. 19 March 1872, d. 12 August 1918; sources of her year of birth range from 1865 to 1873)
