The lure of illustrations of horses is the carrot held out here for beginning readers. The text offers some minimal information about the history of mustangs and their habits, and gives a capsule biography of a typical one, named tumble. The writing is sometimes confusing grammatically (""When the Indians first saw men riding horses they did not know what they were. They were frightened.""), the incidents are cliched and oversimplified (when Tumble returned to the herd after a long captivity ""His father had died. Tumble became King of the Herd.""), and the print is small. The drawings are like pages from a sketch book and would have been more effective in color.