The society publishes the members’ magazine "Die Harfe" (The Harp) three times per year. All aspects of Irish philately are treated in more than 200 pages annually. The first 30 volumes are also available digitally, on DVD or USB flash drive. In particular, the magazine deals with Irish postal history. It encompasses, among others, old postal routes, the transport of mail on board overseas steamboats, national and international postal fees, and the Maltese Cross postmarks used in Ireland. Documentation of the postal history of the Irish independence movement is also an important field. Furthermore, the FAI researches the use of postmark machines, military postal history, postal censorship and post from prisoners of war, Irish postal stationery, international reply coupons, and revenue stamps.