There are no identifying details to the book but the autographs that are dated are all from the 1920's.

The paper is thicker than modern paper and I think they call it parchment paper !!

I purchased the book from auction and it has a lot of the musicians and opera singers .

I have not deciphered all the names but they include....CLARA BUTT, MALCOLM SARGENT, FRIEDA HEMPEL, KEDROFF QUARTETT, FRITZ  KRIESLER, MISCHA ELMAN, ALFRED CORTOT, GUILHERMINA SUGGIA, WILHELM BACKHAUS AND MANY, MANY MORE.

PLEASE NOTE...THE LISTING IS FOR THE STRAUSS + 1 UNKNOWN SIGNATURES  ONLY.