Grab your flashlight for this trip into the darkness below. Readers will explore the deep caverns and caves that continue to fascinate visitors and reveal the wonders of life on Earth from… More →

In 1881, U.S. Army Lieutenant Adolphus Greely and his crew set sail for the Arctic. Their mission was to collect scientific data on the polar climate. They also had a second, secret goal: to… More →

Before technology and maps there were boats and explorers. Lewis and Clark led the Corps of Discovery through previously unmapped lands in the west of the United States. With the help of… More →

In 1803, the United States made a deal to purchase a big area of land called the Lousiana Territory. Soon after, Meriwether Lewis and William Clark were asked to lead an expedition into the… More →

The United States is steeped in rich history and continues to evolve today. In the United States Encyclopedias series, readers will learn about the history of the US government and how it… More →

This title will help readers understand the causes, timeline, and aftermath of the sinking of the Titanic. The title is complete with glossary, index, and additional facts. This title is at a More →