Context:

Explicitly mentioned as 'his book, Titanic Lives' when discussing statistics about survival rates on the Titanic and analysis of why certain passengers lived or died. The book is described as being written 'very much as a dark comedy' and is referenced multiple times throughout the episode for various details about the disaster and its aftermath.

Context:

Described as 'the Walter Lord book, the very famous book' that 'became the definitive account probably for the best part of 50 years.' The hosts note it was based on survivors' letters and interviews, though Lord reportedly didn't take notes during interviews.