Hello Rena,
The LDS "Family History Library Catalog" lists the following book as held in their Salt Lake City library, maybe you can e-mail them and ask them to look up the index for the names that you are looking for. For details see below
Dieck, Alfred, Die Wandermusikanten von Salzgitter : Bd. 1
Wandering musicians of Salzgitter, Hannover, Germany. Indexed.
LDS ref: 943.59/S8 U2w v. 1 - FHL INTL Book
Elizabeth
Greetings from Australia