Time travel en route to historic hotels in Switzerland authors: Ursula Bauer and Jürg Frischknecht ; photos: Andrea Badrutt ; [publ.:] Swiss Historic Hotels
Bibliothekskatalog der Kantonsbibliothek Graubünden: https://www.opac.gr.ch/discovery/fulldisplay?context=L&vid=41BGR_INST:41BGR_V1&search_scope=MyInstitution&tab=LibraryCatalog&docid=alma990006447010206696