Map[Map of the lower Potomac River showing picket lines, January 1862] Concerns Union and Confederate pickets positioned north and south around Pohick Church and Accotink in Fairfax County, Va., in January 1862. Includes a balloon pictured near Pohick Church and labelled as "Decr. 1861," but as noted in Sneden's diary text on pp. 374-376, he indicates that Professor Thaddeus S. C. Lowe also was using the surveillance hot-air balloons in the same area in January...
- Contributor: Sneden, Robert Knox
- Date: 1861