This collection consists largely of letters from Roger Casement to Captain Hans Boehm, during Casement's stay in Germany in 1915, as well as some associated material (photographs, medals) relating to his first contact with the German authorities in November and December 1914 and the formation of the Irish Brigade in 1915.

A collection of postcards depicting images from World War I. The descriptive titles on the front of the postcards are in French and / or Irish while the text on the reverse of each postcard is in Irish.

This collection consists of files relating to Irish Lights during World War I, and the Irish War of Independence and Civil War, covering the period 1914-1931. The files contain reports, letters and telegrams from Lightkeepers and other Irish Lights personnel around the coast; correspondence with the government and state bodies including the British Army and Navy, members of Dail Eireann and the new Departments of the State; and instructions, memoranda and official documents issued to Irish Lights by Government Departments and State bodies. Topics covered include reducing or extinguishing lights ; submarine sightings and attacks ; rescue of shipwrecked crews; and raids on lighthouses.