Can anybody verify the existence of a waltz titled "Souvenir Waltz",
by E. M. Rosner, on any player piano roll or any other mechanical
music vehicle?  Or has anyone seen sheet music for such a tune?

I have not been able to identify this title anywhere I have looked,
and while I do find a composer named Arnold Rosner, I have not found
any E. M. Rosner.

Matthew Caulfield
Irondequoit, New York