The book "Type: A guide to information on the mechanical features of fonts, their sizes, sets, etc. With a brief description of their production" by Stewart, O. O. (Olexandr Oleksandrovich), is an important source of knowledge for anyone interested in the printing process. This book describes in detail the main characteristics of fonts, their sizes, options and production specifics. The author gave readers the opportunity to better understand the essence of typography and the principles of creating printed works. Through this book, many important aspects of printmaking can be studied and understood in greater detail, making it a valuable guide for students, professionals, and anyone interested in this art form.