Caption: 'Panoramic view of Charleston Harbor--advance of iron-clads to the attack, April 7. Union--A. Keokuk. B. Nahunt. C. Nantucket. D. Catskill. E. Ironsides. F. Patapsco. G. Montauk. H. Passaie. K. Weehawken. Rebel--1. Morris Island sand battery. 2. Fort Wagner. 3. Battery Bee, on Cummings Point. 4. [Fort] Johnson. 5. Fort Ripley. 6. Sumter. 7. Charleston City. 8. Castle Pinckney. 9. Fort Redan. 10. Fort Moultrie. 11. Moultrie House. 12. Fort Beauregard. 13. Harbor obstructions. 14. Cooper River. 15. Ashley River.' [full date May 2, 1863.]