The first stereoview is published by S. T. Souder, 263 King Street, Charleston, S.C.  It shows the “South Angle of Fort Sumter”.  There is a nice description by Souder describing the scene on the reverse.

The next stereoview doesn’t have a publisher but has nice “period” writing on the back:

“Fort Sumter, Charleston Harbour, front towards Fort Moultrie,
view from beneath temporary light house tower.”

Both stereo’s are in fine condition and have strong contrast. 

#P196 – Price for the pair $180