 First concentrating on the natural wonders of Yellowstone Park and Montana, then covering much of the United States, he quickly became a supplier of stock photography for many major publishers, including covers for "National Geographic, Backpacker Magazine, Adventure West, Architectural Digest, Audubon, Ski, Bike, Forbes, Skiing, Powder, Photo Techniques, New York Times," MacMillan, Random House, Simon & Schuster, Workman, Nature Conservancy, Sierra, National Wildlife Federation, and many others.He is a regular contributor to "Outdoor Photographer.