This book is a must-have for any artist looking to improve their skills in pen, pencil, and brush techniques. With 101 expertly rendered examples of heads, this book is a valuable resource for artists of all levels. The book features works by Walter Foster, a renowned author and publisher in the field of art instruction. The format of this book is paperback, and it is written in English. The title of the book is "101 Heads In Pen, Pencil And Brush" and it is published by Walter Foster. The book falls under the category of "Books" and "Books Magazines". The topic of the book is art instruction, making it a valuable addition to any artist's library.