Pseudo Isochromatic Plates for Testing Colour Perception fine-bindings 64 plates of photographic plates

64 plates of photographic plates including the coloured frontispiece

Original cream cloth boards

London: Sidgwick & Jackson

inscribed "To Wayne & Liz" and dated January 1974

Richly illustrated throughout in colour

Pseudo Isochromatic Plates for Testing Colour Perception fine-bindings 64 plates of photographic platesPhiladelphia: Beck Engraving Co., 1940. Book of folding colour plates made up of dots with numbers in contrasting colours on each one. Includes the instructional slip for usage. Original black cloth with gilt lettering to front, housed in the blue cardboard box which is split at some joints. Lettering on spine somewhat faded.