Cryptograph (coding and decoding machine) by Sir Charles Wheatstone, 1843-1875 Telecommunications 1843-1875
Healy Pictorial Completion Test I, Edinburgh, Scotland, 1918-1919 Psychology, Psychiatry & Anthropometry 1918-1919
Automaton for Health Matters Gallery representing "Health screening and surveillance of normal populations" Public Health & Hygiene 1994