Context:

Explicitly quoted at the beginning of the episode, with the passage where Marlowe imagines the feelings of a Roman posted to Britain, looking at the Thames estuary as a place of savagery

Context:

Referenced as a documentary source for Boudicca's revolt - 'what you get in Tacitus, a report of Boudicca's revolt that she incinerates London.' This refers to Tacitus's historical writings (likely the Annals)

Context:

Referenced as 'the great Elizabethan antiquary' who wrote about the London Stone, quoted as saying 'the cause why this stone was set there, the time when, or other memory hereof, is none.' This refers to his antiquarian writings about London (likely A Survey of London)