It's really worth the read. This was written by the best military engineer the North had. Lee, arguably the best the South had in the military engineering department, never had a chance to build once he was saddled with the Army of Northern Virginia. He did some works for the Confederacy prior to his Virginia command. One fellow on another forum opted for Edward Porter Alexander as his favorite for engineer.

Book: Notes On Seacoast Defense: Consisting Of Seacoast Fortification, The Fifteen-inch Gun, And Casemate Embrasures (1861)
Author: John Gross Barnard
ISBN: 1437042694
ISBN-13: 9781437042696, 978-1437042696
Binding: Paperback
Publishing Date: Oct 2008
Publisher: Kessinger Publishing
Number of Pages: 116
Language: English

-Amazingly enough it's in reprint. The copy I received through ILL was from the VMI library. Original and well thumbed through by generations of cadets.