While looking for more information on a Currier and Ives depiction of the bombardment of Fort Sumter that I just posted (below), I came across another version that was the same as the one just posted but 
with some significant differences: Fort Sumter is shifted from the center to the right and the guns are shifted to aim accordingly. There are a number of other differences, but the rest of the layout, including the people portrayed, are very similar.
Image info:
Bombardment of Fort Sumter, Charleston Harbor, From Fort Moultrie, 12th & 13th of April, 1861
1861
Currier and Ives
Lithograph
10 x 14 in.
Chicago History Museum, Gift of Charles B. Pike
ICHi-22041