'Passalong Test', psychological test, London, England, 1960-1990 Psychology, Psychiatry & Anthropometry 1960-1990
Model of a male white baby at 22-23 weeks' development, England, 1998 Obstetrics, Gynaecology & Contraception 1998
Difference Engine No.2, designed by Charles Babbage, built by Science Museum Computing & Data Processing 1991