Question: What is a rare survivor on the David and Catherine Driver Farm from American Civil War campaign led by American soldier, businessman, educator, and author William Tecumseh Sherman?

Context articles: David and Catherine Driver Farm
T. S. Fitch
Sherman's March to the Sea
Battle of Atlanta
General William Tecumseh Sherman Monument
Knoxville Campaign
Charles Augustus Lafayette Lamar
William Tecumseh Sherman
John Sherman
Sherman's neckties

The David and Catherine Driver Farm is a historic farmstead in rural Rockingham County, Virginia, near Timberville.
 The main house, a 2.5 story wood frame structure, was built c. 1845 and has Greek Revival styling.
 It was extended in the 1880s, giving it a T-shape and adding Victorian details such as bull's eye window in the front gable.
 The farm's most notable building is a c. 1839 barn, a rare survivor of the American Civil War campaign of Union Army General William Tecumseh Sherman through the area, in which most barns were destroyed.
Tecumseh Sherman Fitch (21 March 1908 – 7 October 1969) was the founder and CEO of Washington Steel Corporation.
 He was the great-grandson of Civil War general William Tecumseh Sherman.
 He graduated from Yale University in 1931, when he joined Jessop Steel, initially working as a laborer and then rising in the ranks of management to head the Composite Steel Division from 1936 to 1942.
 He founded Washington Steel in 1945.
Sherman's March to the Sea, more formally known as the Savannah Campaign, was a military campaign of the American Civil War conducted through Georgia from November 15 to December 21, 1864 by Maj. Gen. William Tecumseh Sherman of the Union Army.
 The campaign began with Sherman's troops leaving the captured city of Atlanta on November 15 and ended with the capture of the port of Savannah on December 21.
 His forces destroyed military targets as well as industry, infrastructure, and civilian property and disrupted the Confederacy's economy and its transportation networks.
 Sherman's bold move of operating deep within enemy territory and without supply lines is considered to be one of the major achievements of the war.
The Battle of Atlanta was a battle of the Atlanta Campaign fought during the American Civil War on July 22, 1864, just southeast of Atlanta, Georgia.
 Continuing their summer campaign to seize the important rail and supply center of Atlanta, Union forces commanded by William Tecumseh Sherman overwhelmed and defeated Confederate forces defending the city under John Bell Hood.
 Union Maj. Gen. James B. McPherson was killed during the battle.
 Despite the implication of finality in its name, the battle occurred midway through the campaign, and the city did not fall until September 2, 1864, after a Union siege and various attempts to seize railroads and supply lines leading to Atlanta.
 After taking the city, Sherman's troops headed south-southeastward toward Milledgeville, the state capital, and on to Savannah with the March to the Sea.
General William Tecumseh Sherman Monument is an equestrian statue of American Civil War Major General William Tecumseh Sherman located in Sherman Plaza, which is part of President's Park in Washington, D.C., in the United States.
 The selection of an artist in 1896 to design the monument was highly controversial.
 During the monument's design phase, artist Carl Rohl-Smith died, and his memorial was finished by a number of other sculptors.
 The Sherman statue was unveiled in 1903.
 It is a contributing element to the Civil War Monuments in Washington, D.C. (added in 1973) and to the President's Park South (added in 1980), both of which are protected historic sites listed on the National Register of Historic Places.
The Knoxville Campaign was a series of American Civil War battles and maneuvers in East Tennessee during the fall of 1863 designed to secure control of the city of Knoxville and with it the railroad that linked the Confederacy east and west.
 Union forces under Maj. Gen. Ambrose Burnside occupied Knoxville, Tennessee, and Confederate forces under Lt. Gen. James Longstreet were detached from Gen. Braxton Bragg's Army of Tennessee at Chattanooga to prevent Burnside's reinforcement of the besieged Union forces there.
 Ultimately, Longstreet's own siege of Knoxville ended when Union Maj. Gen. William Tecumseh Sherman led elements of the Army of the Tennessee and other troops to Burnside's relief after Union troops had broken the Confederate siege of Chattanooga.
 Although Longstreet was one of Gen. Robert E. Lee's best corps commanders in the East, he was unsuccessful in his role as an independent commander in the West and accomplished little in the Knoxville Campaign.
Charles Augustus Lafayette Lamar (1824-1865) the son of Gazaway Bugg Lamar was born and raised in Savannah, Georgia.
 His mother and all 6 of his siblings were lost in the shipwreck of the steamship Pulaski.
 Prior to the start of the Civil War he invested in the Wanderer which had run the slave blockade and was later impounded.
 During the war he was active with his father in the Importing and Exporting Company of Georgia, one of the blockade runners of the American Civil War.
 Toward the end of the war he held the rank of Colonel, and according to U.S. General William Tecumseh Sherman, was the last Confederate killed in the Civil War, at the Battle of Columbus (1865).
William Tecumseh Sherman (February 8, 1820 – February 14, 1891) was an American soldier, businessman, educator, and author.
 He served as a general in the Union Army during the American Civil War (1861–65), for which he received recognition for his outstanding command of military strategy as well as criticism for the harshness of the "scorched earth" policies he implemented in conducting total war against the Confederate States.
John Sherman (May 10, 1823October 22, 1900) was a politician from the U.S. state of Ohio during the American Civil War and into the late nineteenth century.
 A member of the Republican Party, he served in both houses of the U.S. Congress.
 He also served as Secretary of the Treasury and Secretary of State.
 Sherman sought the Republican presidential nomination three times, coming closest in 1888, but was never chosen by the party.
 His brothers included General William Tecumseh Sherman; Charles Taylor Sherman, a federal judge in Ohio; and Hoyt Sherman, an Iowa banker.
Sherman's neckties were a railway-destruction tactic used in the American Civil War.
 Named after Maj. Gen. William Tecumseh Sherman of the Union Army, Sherman's neckties were railway rails destroyed by heating them until they were malleable and twisting them into loops resembling neckties, often around trees.
 Since the Confederacy had limited supplies of iron, and few foundries to roll the rails, this destruction was very difficult to repair.
 They were also called Sherman's bow ties, Sherman's hairpins or Jeff Davis hairpins.