9781578263868 | 1 edition (Hatherleigh Pr, June 28, 2011), cover price $15.00

9780811736060 | Stackpole Books, September 1, 2009, cover price $21.95 | About this edition: Engaging natural history information for a general audience on one of the most beloved groups of birds, including tips on attracting and watching hummingbirds Stunning photographs of common North American and exotic world species Explains the details of the tiny hummingbird's amazing twice-yearly migration More than a dozen species of hummingbirds live in North America, and scores more live in the southern tropics.

9780816064359 | 1 edition (Chelsea House Pub, March 1, 2007), cover price $39.50 | About this edition: Profiles canyons around the world including the Grand Canyon, the Columbia River Gorge, Fish River Canyon, and and Monterey Canyon; and describes how and when they were formed, how the landscape has changed over time, and the contribution of each to the environment.

9780816059171 | 1 edition (Chelsea House Pub, February 1, 2007), cover price $39.50 | About this edition: Presents an introduction to caves, describing how they were formed and how they have changed over time, and providing the history and current formation of ten of the world's most unusual natural underground formations.

9781550227017 | E C W Pr, September 28, 2005, cover price $17.95 | About this edition: This candid and inspirational account of the numerous acts of kindness performed by the Kindness Crew provides readers with ways to start their own kindness movement by showing them how to put the kindness philosophy into action.

9781550226522 | E C W Pr, June 28, 2004, cover price $17.95

9781554906529 | E C W Pr, June 1, 2004, cover price $12.95