Aibidil Gaoidheilge agus Caiticiosma

Aibidil Gaoidheilge agus Caiticiosma ("Irish Alphabet and Catechism") is the first book printed in Ireland in the Irish language. Meant as a Protestant primer, the book was written by John Kearney (), a treasurer of St. Patrick's Cathedral, Dublin. It includes a short section on the spelling and sounds of Irish. The production of this book was part of a larger endeavour by Irish Protestants to print the Bible in the Irish language so that the common person could read it. The book was printed on a press which was set up in the home of Alderman John Ussher (Early Modern Irish: "Seón Uiser"). Ussher, who was a well-known Dublin Protestant, also paid for the venture. Though the printer's identity is unknown, it is possible that William Kearney, a nephew of John Kearney was the printer. 200 copies of the book were printed but only four known copies exist today. In 1995 a copy of the book was bought by Trinity College Library Dublin for £47,700 ($76,463) at Christie's.