United States. National Park Service

Castillo de San Marcos A Guide to Castillo de San Marcos National Monument, Florida

John Brown's Raid National Park Service History Series

Grand Teton: A Guide to Grand Teton National Park, Wyoming

Tonto Cliff Dwellings Guide: Tonto National Monument, Arizona

Clara Barton National Historic Site, Maryland

Fort Sumter: Anvil of War. Fort Sumter National Monument, South Carolina

Agate Fossil Beds National Monument, Nebraska

Charlestown Navy Yard Boston National Historical Park, Massachusetts

Chiricahua National Monument

Devils Tower National Monument, Wyoming

Devils Tower National Monument, Wyoming

Fort Sumter: Anvil of War

Great Smoky Mountains National Park, North Carolina and Tennessee Handbook 112

Hubbell Trading Post National Historic Site: Junior Ranger Workbook

Grand Teton A Guide to Grand Teton National Park, Wyoming

Mesa Verde: Junior Ranger Booklet

Navajo National Monument, Arizona

Montezuma Castle National Monument

Natural Bridges National Monument

Petrified Forest National Monument