Book excerpt: On the Loose is a journey through the American West, led by two adventurous brothers, Terry and Renny Russell. It is a chronicle of triumph and tragedy--the triumph of gaining an insight about oneself through an understanding of the natural world; the tragedy of seeing its splendor increasingly threatened by people who don't know or don't care. The photographs, all taken by the authors, capture Yosemite, Point Reyes, the High Sierra, the Great Basin, and Glen Canyon in the1950s and 1960s.Despite the fact that On the Loose has been out of print for more than a decade, contemporary readers have not forgotten this timeless classic. Readers have described On the Loose as moving and inspirational. One reader says, "This book made me cry at [age] 16, and it still does at 45." Another reader notes, "This book expresses that deep yearning to wander, to explore, to live fully like no other artistic expression I have ever come across."