Henry Eggestein, whose first dated book was issued in 1471, was living in Strasburg as early as 1442, and probably began to print almost as soon as Mentelin. The earliest date attributable to any of his books is 1466, the date written by Bamler, at that time an illuminator, in the copy of one of his forty-five line editions of the Bible now in the library at Wolfenbüttel. In 1471, Eggestein himself tells us that he had printed a large number of books. A little time before this he had issued a most glowing advertisement of his Bible. He appeals to the good man to come and see his wonderful edition, produced, as the early printers were so fond of saying, not by the pen, but by the wonderful art of printing. The proofs had been read by the best scholars, and the book printed in the best style. This Bible, which has forty-five lines to the column, was finished by 1466, for the copy now in the library at Munich was rubricated in that year. The only printed dates that occur in Eggestein’s books are 1471 and 1472. Hain gives three books of the years 1474, 1475, and 1478 as printed in his type, but these contain no printer’s name. The most mysterious printer connected with the history of the Strasburg press, is the printer who used a peculiarly shaped capital R, and is therefore known as the R printer. He seems to have been very generally confounded with Mentelin till 1825, when the sale catalogue of Dr. Kloss’ books appeared. In this sale there happened to be two copies of the _Speculum_ of Vincent de Beauvais, one the undoubted Mentelin edition, the other by the R printer. The writer of the note in the catalogue stated that, on comparison, the types of the two editions, though very like each other, were not the same. Since the type is different, and the peculiar R has never yet been found in any authentic book printed by Mentelin, we may safely say that Mentelin was not the printer. To whom, then, are the books to be ascribed? Many consider them the work of Adolf Rusch d’Ingwiller. M. Madden attributes them all to the Monastery of Weidenbach at Cologne, in common with most of the other books by unknown printers, and dates them about 1470. Bradshaw, writing to Mr. Winter Jones in 1870, says: ‘In turning over a volume of fragments yesterday, I found a Bull of Sixtus IV., dated 1478, in the type of the famous “R” printer so often confounded with Mentelin. His books are commonly put down to 1470 or earlier, and I believe no one ever thought of putting his books so late as 1478.[12] Yet this little piece is almost the only certain date which is known in connection with this whole series of books.’ Complete sets of the _Speculum_ of Vincent de Beauvais are very often made up, partly from Mentelin’s and partly from the R printer’s editions, which points to their having been probably printed at the same place and about the same time. The earliest MS. date found in any of the books by the R printer