Excellent, clearly written how-to guide provides time-tested advice on training powers of observation, judging proportions of boulders, trees, clouds and other landscape forms; learning how to assess values (light and dark), and more. Includes valuable suggestions for using pencils, chalk, charcoal and other media, step-by-step demonstrations for transforming cubical, cylindrical, round and irregular shapes into mountains, forests, sand dunes, shorelines and other geographical features. 180 line illustrations and halftones.