Arctic Crossing

A Journey Through the Northwest Passage and Inuit Culture

2001

Chasing Denali

2018

In the Shadow of Denali

Life and Death on Alaska's Mt. McKinley

1993

Kayaking the Vermilion Sea

Eight Hundred Miles Down the Baja

1995

National Geographic Atlas of the National Parks

2019

Running Dry

A Journey From Source to Sea Down the Dying Colorado River

2010

Surviving Denali

A Study of Accidents on Mount McKinley 1903-1990

1982

Where Mountains Are Nameless

Passion and Politics in the Arctic National Wildlife Refuge

2005