9 books
10th Mountain Hut Guide
Aspen to Glenwood: Day Hiking Guide
Aspen/Snowmass Trails Hiking Guide
Day Hikes in the Roaring Fork Valley and Beyond
Winter Trails
The 10th Mountain Hut Book
Aspen & Central Colorado Trails
Aspen, Snowmass Downhill Ski Trails
Aspen-Snowmass Trails