Map, Forma Urbis Romae from A Dictionary of the Classical World ed A A M Van den Heyden and H H Scullard, Thomas Nelson and Sons Ltd, 1959 (originally Atlas van de Antieke Wereld, Elsevier)
Technical drawings of automaton, ballista, crossbow, groma, hodometer, lock, siphon engine, slot machine, steam engine, water organ, Maps of the Roman Empire and Rome and Plan of the Forum by Rodney Paull © Random House Group Ltd
All other photographs from the author’s family archives © Lindsey Davis, all rights reserved