Eric Wittenberg’s other sites:

 Eric J. Wittenberg Law

6th Pennsylvania Cavalry

Civil War Discussion Group Online

Eric Wittenberg’s blog

Stuarts Ride

Gettysburg Retreat

Preservation groups:

Hunterstown 1863

Monterey Pass Battlefield Association

Civil War Preservation Trust

Brandy Station Foundation

Trevilian Station Battlefield Foundation

Central Virginia Battlefields Trust

Averasboro Battlefield

Mosby Heritage Area Association

Save Historic Antietam Foundation

Richmond Battlefields Association

Falling Waters Battlefield Association

Organizations:

Shenandoah Civil War Associates

Civil War Education Association

Chambersburg Civil War Seminars

Little Big Horn Associates

Gettysburg College Civil War Institute

George Tyler Moore Center for the Study

   of the Civil War

Stuart-Mosby Historical Society

Friends of the Alligator

Publishers/Publications:

Savas-Beatie, LLC

Ironclad Publishing

Potomac Books

Westholme Publishing

Edinborough Press

Kent State University Press

LSU Press

Blue and Gray Magazine

North and South Magazine

Gettysburg Magazine

America’s Civil War

Civil War Times Illustrated

Other Civil War Sites of Interest:

Battle of Gettysburg Buff

Gettysburg Discussion Group

Civil War Discussion Group Online

Virtual Gettysburg

Virtual Antietam