Plan of Fort Jackson, Showing the effect of the Bombardment by the U.S. Mortar Flotilla and Gunboats April 18th to 24th, 1862. Flag Officer D.G. Farragut Commanding Fleet, Com. D.D. Porter Commanding Flotilla. Surveyed by J.S. Harris under the direction of F.H. Gerdes, Asst. U.S. Coast Survey, A.D. Banche, Supdt.