This week Patrick covers the best in Irish and International history publications for April 2021. Books covered on the show include: 'History of World Trade Maps' with Philip Parker, ‘Art, Ireland, And the Irish Diaspora’ with Eimear O’ Connor, 'The Return' with Harry Sidebottom, 'A Difficult Birth: The Early Years of Northern Ireland, 1920-1925' with Alan Francis Parkinson and 'Walking Backwards to Heaven? Hope and the Catholics of Cloyne Diocese 1700-1830' with Martin Millerick.