- A comprehensive guide to the natural world, covering topics such as ecology, conservation, and wildlife.
- A comprehensive guide to over 10,000 plant species, with photographs and illustrations. 20 DK Encyclopedia Books By DK Publishing
- A chronological account of American history, from colonial times to the present day. - A comprehensive guide to the natural world,
- A chronological account of scientific and technological advancements throughout history. covering topics such as ecology
- A comprehensive guide to art history, covering various styles, movements, and artists.