Narziß und Goldmund (Narcissus and Goldmund) by Hermann Hesse, 1970 Fischer Edition
Source: http://aqua-velvet.com.License: All Rights Reserved.
Cover byPascal, but couldn't find any. Your help is welcome!
That's a crazy eszett. Obviously Mendoza wasn't German, but I would expect something more refined from him. The rest of the typeface is a gem and largely undiscovered.