Samson et Dalila-Toulouse, Capitole, 1964
Otello-Toulouse, Capitole, January? 1967
Il Trovatore-Basel, Stadttheater, 1968
Turandot-San Francisco, War Memorial, 15 November 1968
Don Carlos-Vienna, Staatsoper, 29 December 1968
Tosca-Vienna, Saatsoper, December 1968
La Bohème-Vienna, Staatsoper, 7 February 1969
Boris Godunov-Slazburg, Gr. Festspielhaus, 1969
Dalibor-Vienna, Staatsoper, 19 October 1969
Fidelio-Vienna, Staatsoper, 1970
Un Ballo in Maschera-München, National, 12 February 1970
Der Rosenkavalier-Vienna, Staatsoper, 1970
Oedip-Bucharest, May 1970
La fanciulla del west-1971
Pagliacci-Vienna, Staatsoper, 6 October 1972
Dragoste si jertfa-Bucharest, 1977
Reference: Iosif Sava Cu Ludovic Spiess prin teatrale lirice ale lumii, Editura Muzicala, Bucuresti, 1989. Since I do not speak Romanian, I probably left out important facts. Spiess sang probably a lot more roles including operettas. The book is quite confusing and lacking in a chronology.
I wish to thank Thomas Silverbörg for the recordings (Samson et Dalila, Turandot).
I wish to thank Roberto Falcone for the pictur (private).
I wish to thank Vladimir Efimenko for the picture (Calaf).