In laying out this book I have put into it the experience of many years of actual work in the designing of Monograms, Ciphers, Trade-Marks, and other letter devices. I have given the work much careful thought in order to present the most useful material, to give that material on a good workable scale, and in such a way that any design can be quickly found. By the arrangement of the designs the plates form their own index. ..A. A. TURBAYNE.