Pen Drawing and Pen Draughtsmen: Their Work and Their Methods; A Study of the Art Today With Technical Suggestions. E-book. Formato PDF Ioseph Pennell   -  Forgotten Books, 2017  - 

With a certain class of writers on art I am not concerned, since to them eloquent writing is of more importance than honest criticism, and their ignorance of the technique of any art is only equalled by their ability to write of it.