Angus Konstam. In the fight for control of the Mississippi River - a vital strategic artery in the Civil War - the Confederates relied on field fortifications and small gunboats while the Union built a series of revolutionary river ironclads that fought in a string of decisive engagements. This book explains how these vessels worked, how they were constructed, how they were manned and how they fought. 48 pgs., 40 B&W photos and illustrations, 7¼"x 9¾", sfbd. #0C11129