This is a guide to the sources of Irish history. It explains what records survive from ancient and Gaelic Ireland, from the Medieval and Early Modern period, as well as the 17th, 18th, 19th and 20th centuries, and found now in publicly available pdfs. It is lavishly illustrated with pages from these books, and short descriptions of the records contained therein. This book specifically serves as a companion book to an accompanying sdcard with 5,000 pdf books of interest to Irish historians. The sdcard is not included here, see www.ebay.ie to purchase the card.