found:Thomson. Int. cyc. mus & musns, 9th ed.(Jacques Offenbach; real name Eberst)
found:Riemann Mus.-Lex. 1959(Jacques (Jakob) Offenbach; father's name Eberst)
found:His Robinson Crusoé, c1978:t.p. (J. Offenbach)
found:Trauberg, L. Z. Zhak Offenbakh i drugie, 1987.
found:His Divertimento über "Schweizer Lieder," c1992:t.p. (Jacques Offenbach) p. 2 of cover (facsim. of original t.p.: Jacob Offenbach)
found:Ōsaka Firuhāmonī Kōkyō Gakudan. "Nyurunberuku no meikashu" zensōkyoku, p1981:label (J. Offenbach) container (J. [in rom.] Offenbakku)
found:If Helen only knew it, c1944:t.p. (Jaques Offenbach)
found:Bracconieri, 1883:title page (G. Hoffembach)
found:Grove music online, June 26, 2018s.v. (Offenbach, Jacques [Jacob]; (b Cologne, June 20, 1819; d Paris, Oct 5, 1880). French composer of German origin)
found:Wikipedia, September 18, 2018(Jacques Offenbach (20 June 1819-5 October 1880); German-French composer, cellist and impresario of the romantic period; born Jacob or Jakob Offenbach in Cologne to a Jewish family; son of a synagogue cantor; converted to Roman Catholicism in 1844; died in Paris)
found:Encyclopædia Britannica online, September 18, 2018(Jacques Offenbach, original name Jacob Offenbach, (born June 20, 1819, Cologne, Prussia [Germany]--died October 5, 1880, Paris, France), composer who created a type of light burlesque French comic opera known as the opérette, which became one of the most characteristic artistic products of the period)