"Yes. A few pages from them remain and are to be seen at the National Library at Paris. The letters used are very coarse and uneven and are in the Latin type employed by the monks in writing their manuscripts. It is almost a romance to picture Gutenburg shut up in the old ruined monastery where he worked night and day with one of his faithful helpers--a goldsmith who had long been in his employ--and two other tried and trusty apprentices. You can see how necessary it was that he have men whom he could rely on not to divulge his secret. Probably the goldsmith's knowledge of metals was of service to his master in the undertaking; as for the joiner who had previously aided in constructing mirror frames, he made most of the tools. We don't know much about the third workman, but we do know that later one of the trio died very suddenly, and the interruption to Gutenburg's work caused great delay. Fearful that in the meantime the secret of the invention might leak out, or that the old servant's heirs might insist on having a share in the discovery, Gutenburg melted up his forms and abandoned further labor for a time. This was a great pity, for by destroying what he had done the inventor had it all to create over again later on. His rash act did, however, prove one thing which history wanted to know, and that was that Gutenburg used metal forms and not wood to make his letters." "How soon did he re-make his metal forms?" asked Paul eagerly. "Not right away," responded Mr. Cameron. "He was deeply in debt and a good deal discouraged by the death of his efficient workman on whom he was very dependent. For six years we hear no more of him. Then he appeared at Metz where he began borrowing money again, just as he had done before. He was fortunate in securing the aid needed, and it is from this period on that his best printing was done. He now branched out into more ambitious tasks, producing a copy of the Latin Bible in three volumes. This pretentious undertaking of course required a great many letters, and he found that to cut them by hand was too slow a process; moreover, the lead letters were very soft and wore down quickly. He must cast his letters in brass molds and make them of more durable metal. But alas, such an innovation was costly and his money had given out. Therefore, much as he dreaded to part with his secret, he was forced to take into partnership a rich metal worker by the name of John Faust." Mr. Cameron paused to think a moment.