The Rosslyn Missal is a book about an ancient Irish manuscript that is currently housed in the Advocates' Library in Edinburgh, Scotland. The manuscript is known as the Rosslyn Missal and is believed to have been created in the 14th century. The book is authored by Hugh Jackson Lawlor and provides a detailed description of the manuscript, including its history, contents, and significance.The Rosslyn Missal is a liturgical manuscript that contains...