Revised and enlarged from the author's "Notes on bibliographical evidence for literary students and editors of English works of the sixteenth and seventeenth centuries" published in the Transactions of the Bibliographical Society, vol. xii, 1914, and issued also separately. "A note on printing, its origin and spread. Some famous presses and publishing houses": pages 264-287. "A short list of some books of especial utility to students": pages xiv-xv.