Set of index cards describing the local features of the townland of An Leathmhás [Halfmace]. A note on a hedge school a few yards from the shore, and a description given of Tobar Carraig an Mhaistire, the Mace Head Atmospheric Research Centre, Cuainín na Bothóige (an account of a tragic incident that took place in its history), Oileán an Bhromaigh (Colt Island on the OS maps), Duirling na Spáinneach (where an Armada ship wrecked), Ceann Mása (Mace Head), An Dhitheallach, Campainn, Liath Brás (referred to as Lebros Rock on the 19th century maps), and Cuan an Leath Mhás. UCG lecturers Dr. Gerard Jennings, Dr. T C O'Connor, and Dr. A. F. Roddy, who are associated with the Mace Head Atmospheric Research Centre provided some of the information, and T. P. Kilfeather's Book 'Ireland, Graveyard of the Spanish Armade' is also a quoted source of information for this townland.