Alexander Performance Scale Test kit, Edinburgh, Scotland, 1946-1950 Psychology, Psychiatry & Anthropometry 1946-1950
Cybernetic tortoise, developed to help with studies on brain function Psychology, Psychiatry & Anthropometry 1950-1952
Anderson-type obstetrical forceps, United Kingdom, 1901-1930 Obstetrics, Gynaecology & Contraception 1901-1930