UPDATE ALERT: The book was snapped up within minutes of this post. Thanks to everyone who inquired.
I recently ordered a “Like New” copy of Joseph L. Harsh’s Confederate Tide Rising: Robert E. Lee and the Making of Strategy, 1861 – 1862 to round out my set of his series. It came damaged in the post in part because the shipper packed it poorly (no padding). He has kindly offering to replace the book. I would be delighted to provide the damaged copy to anyone who would care to pay for the shipping. The pages of the book are in excellent shape and clearly new/unread. The damage is a scrape/bend to the cover and an associated rip of the book jacket. The dent slightly effects the first 10 pages of the book. Please contact me at renetyree at gmail.com. First-come-first-served.
I’ve been reading this weekend about the Monocacy Aqueduct, a bridge which carried the Chesapeake & Ohio Canal over the confluence of the Monocacy River and Potomac River. It was constructed between 1829 and 1833 and was one of “eleven stone aqueducts designed to carry the canal across the major river tributaries that drain into the Potomac River along the canal’s route.”  It spans 516 feet, has seven arches, and was constructed primarily of stone quarried from nearby Sugarloaf Mountain. 
Because the canal was used to carry war materials and men, Lee twice ordered it destroyed. The first directive was to General D. H. Hill who conducted preliminary raids into Maryland in early September, 1862. Hill was also to “disrupt the B&O Railroad.”  According to the Smithsonian Associates in an article here, lock keeper Thomas Walter, convinced Hill to drain the aqueduct rather than destroy it. While sympathetic to the Southern cause, Walter did not want to see the structure destroyed. 
Hill’s men cut banks holding out the Potomac River and put large boulders in the canal but all damage was largely repaired within two months.
On this occasion, Jeb Stuart justified his reputation for alert reconnaissance. Almost instantaneously he perceived and reported to Lee the enemy’s rapid withdrawal. He also ordered Hampton to pursue and harass the Federal column retiring from Flint Hill toward the Chain Bridge. Into the hours of darkness, Hampton closely pressed the Federal tail under Sedgwick, lobbing shells into the panicky main body until the heavy casualties suffered by the 1st North Carolina Cavalry in an“ambuscade”laid by the 71st Pennsylvania Infantry bought breathing space for the retreating Federals. Meanwhile, in the center of the line, where Stuart had only Fitz Lee’s tired troopers, the Confederate horsemen pressed more gently and permitted Hooker to withdraw through the county seat virtually unscathed. Heros von Borcke, Stuart’s Prussian chief of staff (see his memoir online here), planted the Confederate colors on the courthouse green, while deliriously happy Southern sympathizers mobbed the troopers, and damsels showered Stuart with kisses. Jeb even found time to visit his friend and “spy” Antonia Ford. 
 ambuscade. Dictionary.com. The American Heritage® Dictionary of the English Language, Fourth Edition. Houghton Mifflin Company, 2004. http://dictionary.reference.com/browse/ambuscade (accessed: July 25, 2009).
 Joseph L. Harsh, Taken at the Flood : Robert E. Lee and Confederate Strategy in the Maryland Campaign of 1862 / [book on-line] (Kent, OH: Kent State University Press, 1999, accessed 25 July 2009), 19; available from Questia, http://www.questia.com/PM.qst?a=o&d=102364729; Internet.