found: Strauss, R. Salome [SR] p1980:labels (I. Borkh) container (Inge Borkh, soprano)
found: New Grove(Borkh, Inge; b. 5-26-1921, Mannheim; Swiss soprano of German birth)
found: Grove music online, September 2, 2015(Borkh, Inge (Simon, Ingeborg); born May 26, 1917, Mannheim; Swiss soprano)
found: Oxford dictionary of music online, September 2, 2105(Borkh, Inge (Simon, Ingeborg); born 1917, Mannheim; Ger.-born Swiss soprano)
found: Kutsch/Riemens, 3. erw. Aufl.(Borkh, Inge; born Ingeborg Simon, May 26, 1921 (according to other sources: 1917), Mannheim; soprano)
found: International dictionary of opera, c1993(Borkh, Inge (real name: Ingeborg Simon); born May 26, 1917, Mannheim; soprano)
found: Musik in Geschichte und Gegenwart, 2. Ausgabe(Borkh, Inge (originally: Ingeborg Simon); born May 26, 1921, Mannheim; singer)
found: New York times WWW site, viewed Aug. 29, 2018(in obituary published Aug. 28: Inge Borkh; b. Ingeborg Simon, May 26, 1921, Mannheim; fled Germany with her family in 1935, after the rise of the Nazis, settling first in Geneva and then in Vienna; after the Anschluss, in 1938, she returned to Switzerland; made her debut in 1940 in Lucerne, adopting Inge Borkh as her stage name; d. Sunday [Aug. 26, 2018], Stuttgart, aged 97; soprano who inhabited with thrilling intensity some of the most hair-raising and daunting roles in the operatic repertoire)
