Animal Tracks

A Folding Pocket Guide to the Tracks & Signs of Familiar North American Species

2000

Costa Rica Wildlife

A Folding Pocket Guide to Familiar Species

2001

Edible Wild Plants

A Folding Pocket Guide to Familiar North American Species

2001

Knots

A Folding Pocket Guide to Purposeful Knots

2006

Mushrooms

A Folding Pocket Guide to Familiar North American Species

2002

The Nature of Alaska

An Introduction to Familiar Plants and Animals and Natural Attractions

2005

The Nature of Arizona

An Introduction to Familiar Plants, Animals & Outstanding Natural Attractions

2005

The Nature of California

An Introduction to Familiar Plants, Animals & Outstanding Natural Attractions

2005

The Nature of Florida

An Introduction to Familiar Plants, Animals & Outstanding Natural Attractions

2005

The Night Sky

A Glow-in-the-Dark Guide to Prominent Stars & Constellations North of the Equator

2001

Trees

2002

Weather

An Introduction to Clouds, Storms and Weather Patterns

1998