Zinn and the Art of Mountain Bike Maintenance walks you through the complete spectrum of mountain bike maintenance and repair.
Lennard Zinn’s knack for teaching and his years of experience shine through as he concisely presents and explains each aspect of bike maintenance, breaking down each repair into easily repeatable steps.
Serving as a complete mountain bike repair instructional clinic, the flexibility of the DVD format also allows the viewer to quickly and easily access specific sections.

Created in affiliation with the National Audubon Society, Audubon Birds California is an elegant and intuitive digital field guide for identifying and understanding birds.

Audubon Birds California is your essential guide to over 520 species of bird found in California. Every species featured includes a species page filled with current and complete information on identification, behavior, habitat, range, diet, nesting, mating, migration, endangered status and more.

This history of the 10th Mountain Division during World War II focuses on the personal experiences of the mountain troops who served in Alaska and Italy. Feuer conveys the opinions expressed by the veterans about the conduct of the campaigns—both the good and the bad, with no holds barred. Senator Bob Dole, who was seriously wounded during the campaign, provides a foreword. This fascinating account also reveals the differences in training and strategy from those employed by German ski troops of the same era.