The four volumes of the LIturgia Horarum are now available in PDF e-book format. The texts conform exactly to the LIbreria Editrice Vaticana's printed editions (2010), maintaining the same layout and page numbers. The digital version contains linked indexes and side navigation tabs allowing for easy movement through the different sections of the book. The PDFs cannot be edited but allow the text to be highlighted. Download the preview here to see the e-book display on your device. Info and purchasing at Digital Breviary.