Sally M. Walker

The Mason-Dixon Line's history, replete with property disputes, persecution, and ideological conflicts, traverses our country's history from its founding to today. We live in a world of boundaries—geographic, scientific, cultural, and religious. One of America's most enduring boundaries is the Mason-Dixon Line, most associated with the divide between the North and the South and the right to freedom for all people. Sibert Medal–winning

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In 1638, John Lewger made a home in the wilderness of the New World, in a place called Maryland. He named his house St. John's, and for nearly eighty years, it was the center of an ambitious English plan to build a new kind of community on American soil. Men and women lived and worked within its walls. Babies were born. Last breaths drawn. St. John's walls witnessed the first stirrings of the great struggles that would dominate the continent for the...

Illustrations and text describe the physical characteristics, habitats, and eating habits of coelacanths, prehistoric fish that were thought to be extinct.

This book describes the physical characteristics, life cycle, behavior, and conservation of rhinos.

Eight-year-old Letty attempts to save her pet goose from marauding British soldiers in New Jersey during the Revolutionary War.

Presents an illustrated history of the H.L. Hunley, a Civil War submarine that mysteriously disappeared after a mission in 1864 and was re-discovered and excavated in 1995.

BONUS FEATURE: Enhanced CD featuring photos, maps, and illustrations from the book.
For more than one hundred years, a submarine lay buried beneath the ocean floor near Charleston, South Carolina. This Civil War stealth weapon–the H. L. Hunley–made history in 1864 as the first submarine ever to sink an enemy ship. But something went wrong during that daring mission. The Hunley never returned to port.
Despite decades...

On July 28, 1996, two young men stumbled upon human bones in the shallow water along the shore of the Columbia River near Kennewick, Washington. Was this an unsolved murder? The remnants of some settler's or Native American's unmarked grave? What was the story behind this skeleton? Within weeks, scientific testing yielded astonishing news: the bones were more than 9,000 years old! The skeleton instantly escalated from interesting to extraordinary....