Columbia subject headings:
Color photography--Autochrome process.
Color photography--Switzerland--History--20th century.
Switzerland--Pictorial works.
Harvard subject headings:
Color photography--Autochrome process.
Color photography--Switzerland--History--20th century.
Switzerland--Pictorial works.
Princeton subject headings:
Color photography--Autochrome process.
Color photography--Switzerland--History--20th century.
Switzerland--Pictorial works.