Image Details
As Union officers watched from a point near Fort Calhoun, the U.S.S. Monitor (top center) and the Merrimac (C.S.S. Virginia, top right) battled for several hours, each inflicting damage on the other. The Merrimac had earlier destroyed two wooden Union frigates, including the U.S.S. Congress, shown in flames (top left).
Prints and Photographs Division, Library of Congress