Mastering Sketching: A Complete Course in 40 Lessons
"The book is illustrated with a rich range of examples of effective sketches, which Martin broadly defines as an artist’s personal record of his or her observations.  Sketching is presented as a valuable growth tool for artists because they are under no obligation to show these experiential notations to others. Beginners and seasoned artists alike can benefit from these lessons and from the habit of daily sketching they foster" -Library Journal