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Introduced when describing the guest Ronan McGreevey as 'the author of a brilliant book on the assassination of Sir Henry Wilson, Great Hatred'

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Referenced when discussing the destruction of the Public Records Office: 'there's a famous quote in Ernie O'Malley's book' about the 'white rain' of paper falling on Dublin during the Four Courts battle

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Mentioned as 'a new book by an Irish Army officer called Gareth Prendergast' discussing how quickly the National Army overwhelmed garrisons in Waterford and Limerick

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Referenced when discussing Erskine Childers' execution, describing him as 'a very famous author, the author of The Riddle of the Sands, who is the secretary of the Anglo-Irish delegation'

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Quoted directly when discussing the legacy of the Irish Civil War: 'Charles Townsend writes at the end of his book, The Republic' about the emergent Irish state becoming a 'remarkably stable democracy'