Shenandoah in Flames:
The Valley Campaign of  1864.
Time-Life Books1987
The Guns of Cedar Creek.
The climactic battle 
of the 1864 Valley campaign.
Harper & Row, 1988.
(Read Chapter One)"
"Rich in political and military relevance for our times."
The New York Times 10/16/88.
(Read the New York Times review.)

"A lively narrative history...a tightly focused work." 
Kirkus Reviews, 7/1/88. 
For King and Country:
The Maturing of George Washington 1748-1760.

HarperCollins 1993.
"...a terrific story and Lewis tells it with rare narrative skill...a fastpaced, engaging narrative." The Los Angeles Times, 2/21/93.

(Read more reviews.)
The Wild Animals of North America.
Hugh Lauter Levin Associates 1998.

West from Shenandoah:
A Scotch-Irish Family Fights for America 1729-1781.
John Wiley & Sons 2004.

 (Read Chapter One.)

Brace for Impact:
Surviving the End of the Industrial Era.
Editor and Publisher 1988-1993 of 
Civil War Magazine

 Chairman of the Civil War Society.

 (Read an editor's introduction.)
Articles on history and the environment
published in Smithsonian, Audubon,
Air & Space, Historic Preservation,
Civil War, National Wildlife and
International Wildlife Magazines.
Writer for six years of "EQ Index." an authoritative annual review of the state of the US environment appearing in National Wildlife Magazine and the World Almanac.