Dan R. Lynch – författare

Arizona Rocks & Minerals

A Field Guide to the Grand Canyon State

Michigan Rocks & Minerals

A Field Guide to the Great Lake State

Lake Superior Agates Field Guide

Rocks & Minerals of Washington and Oregon

A Field Guide to the Evergreen and Beaver States

Rocks & Minerals of the United States

Quick Guide

Rocks & Minerals of California

Your Way to Easily Identify Rocks & Minerals

Rock Collecting for Kids

An Introduction to Geology

Petoskey Stone

Finding, Identifying, and Collecting Michigan’s Most Storied Fossil

Crystal Healing

The Science and Psychology Behind What Works, What Doesn't, and Why

Fossils for Kids

Finding, Identifying, and Collecting

Fossils for Kids

Finding, Identifying, and Collecting

Petoskey Stone

Finding, Identifying, and Collecting Michigan’s Most Storied Fossil

Rock Collecting for Kids

An Introduction to Geology

Lake Superior Rocks & Minerals Field Guide

A Field Guide to the Lake Superior Area

Rocks & Minerals Backyard Workbook

Hands-on Projects, Quizzes, and Activities for Kids

Earth Book for Kids

Volcanoes, Earthquakes & Landforms

Turquoise

Identifying and Collecting the Southwest's Iconic Gemstone

Colorado Rocks & Minerals

A Field Guide to the Centennial State

Minnesota Rocks & Minerals

A Field Guide to the Land of 10,000 Lakes

Wonder of North American Agates

Rocks & Minerals of Wisconsin, Illinois & Iowa

A Field Guide to the Badger, Prairie & Hawkeye States

New York Rocks & Minerals

A Field Guide to the Empire State

Rocks & Minerals of the Pacific Coast

Your Way to Easily Identify Rocks & Minerals