I realize I discovered this topic a bit late but I will post my question here anyway. I would be specifically interested in locating the score (or a part thereoff) of Silas's opera Nitocris. Would anyone have an idea if it survived time and where it could be kept? I'm asking because references don't mention any composition date and neither is it clear to me yet if the work was performed, which would of course give some clues. The reason for my interest is simple: I am writing a handbook on Dutch operas and we perform excerpts of these in concert. For any given title to be considered the first criterion is of course that the score or part thereoff survives, otherwise it would become a study of librettos which is not the objective of the book.