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Quarter-plate `Cameo' camera used to take 'second phase' of Cottingley Fairies photographs, 1918-1920
Radio equipment comprising:- one-valve, home-constructed self-excited transmitter
Glass necklace worn to prevent bronchitis, Chelsea, London, England, 1914
Ethnography and Folk Medicine
Photograph of the instruments used by the British expedition when observing the 1919 total solar eclipse in Brazil.