|"Picket guard on the alert, near Lewinsville, Va." Source.|
|"Picket guard, Lewinsville, Va." Civil War-era colorization of the same stereoview with a different caption. Source.|
|Higher resolution version of the scene. Source.|
"Picket guard on the alert, near Lewinsville, Va." Union soldiers in front of a lean-to shelter posing as if they were fighting in a skirmish, 1861. By Edward Bierstadt. Animated stereoviews. Later used as a reference for his brother Albert Bierstadt's painting seen here:
|"Guerrilla Warfare," by Albert Bierstadt, 1862. Source.|
I have come across at least two other versions of Union soldiers posing in front of the shelter by Edward Bierstadt. The following stereoview is from Lincoln in Photographs: An Album of Every Known Pose.
|"Picket Guard at rest near Lewinsville, Va." Another scene of Union soldiers posing in front of the shelter.|
The third is said to show Union soldiers guarding Confederate POWs in front of the shelter.
|"Picket Guard with Prisoners Near Lewisville." The resolution of the photograph is too low to tell whether or not the "Lewisville" caption is misspelled. From Cowan's Auctions. Source.|