‘Infra-red’ historical pictures (exact matches)

Infra-red
Infra-red
Actina – The Portable Sun lamp
Actina – The Portable Sun lamp
Infra-red and ultraviolet sun lamp, England, 1960–1970
Infra-red and ultraviolet sun lamp, England, 1960–1970
Infra-red
Infra-red
Early colour photography: Infra-red treatment at the health centre of a factory
Early colour photography: Infra-red treatment at the health centre of a factory
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