Columbia subject headings:
Harvard subject headings:
Documentary photography--Switzerland--Graubünden--History.
Material culture--Switzerland--Pictorial works.
Photograph collections--Switzerland--Graubünden--History.
Photographs--Conservation and restoration--Switzerland--Graubünden.
Società Retorumantscha. Institut dal Dicziunari Rumantsch Grischun--Photograph collections.
Princeton subject headings:
Documentary photography--Switzerland--Graubünden--History.
Material culture--Switzerland--Pictorial works.
Photograph collections--Switzerland--Graubünden--History.
Photographs--Conservation and restoration--Switzerland--Graubünden.
Società Retorumantscha. Institut dal Dicziunari Rumantsch Grischun--Photograph collections.