The Moon: A Folding Pocket Guide to the Moon, Its Surface Features, Phases and Eclipses (Earth, Space and Culture)

The Night Sky: A Folding Pocket Guide to the Moon, Stars, Planets and Celestial Events (Earth, Space and Culture)

Weather: A Folding Pocket Guide to Clouds, Storms and Weather Patterns (Earth, Space and Culture)

Animal Tracks: A Folding Pocket Guide to the Tracks & Signs of Familiar North American Species (Wildlife and Nature Identification)

21st Century Atlas of the Moon

Edible Wild Plants: A Folding Pocket Guide to Familiar North American Species (Outdoor Skills and Preparedness)

Mushrooms: A Folding Pocket Guide to Familiar North American Species (Wildlife and Nature Identification)

NightWatch: A Practical Guide to Viewing the Universe

Medicinal Plants: A Folding Pocket Guide to Familiar Widespread Species (Outdoor Skills and Preparedness)

Trees: A Folding Pocket Guide to Familiar North American Plants (Wildlife and Nature Identification)

Geology: A Folding Pocket Guide to Familiar Rocks, Minerals, Gemstones & Fossils (Earth, Space and Culture)