The Speedball Textbook, 25th Edition, is a comprehensive guide to pen and brush lettering, focusing on visual arts and artistic techniques. Published by Speedball Art Products Co., this study guide is written in English and contains 120 pages filled with valuable information for art and calligraphy enthusiasts. The ring/wire-bound paperback format makes it convenient to reference while learning various artistic techniques. This textbook is a valuable resource for anyone looking to enhance their skills in the field of pen and brush lettering.