Columbia subject headings:
Camera obscuras--Exhibitions.
Cameria Lucidas--Exhibitions.
Nekes, Werner, 1944- Exhibitions.--Art collections,
Optical instruments--Exhibitions.
Optics and art--Exhibitions.
Shadow-pictures--Exhibitions.
Harvard subject headings:
Nekes, Werner, 1944---Scientific apparatus collections--Exhibitions.
Optical instruments--Exhibitions.
Optics and art--Exhibitions.
Princeton subject headings:
Camera lucidas--Exhibitions.
Camera obscuras--Exhibitions.
Nekes, Werner, 1944- Exhibitions.--Art collections,
Optical instruments--Exhibitions.
Optics and art--Exhibitions.
Shadow-pictures--Exhibitions.