Objects are listed chronologically, and include: a Neolithic Trapanned Skull (c.10,000 bce); Clay Tablets from the Library of Assurbanipal (7th century bce); Avicenna's Tomb in Hamadan, Iran (1037); a Plague Doctor Mask (17th century); John Snow's Cholera Map (1854); the Snellen Chart for Eye Tests (1862); Alexander Flemming's Petri Dish (1928); a Red ribbon for AIDs awareness (1991).