1850, these laborers produced 4 million bricks, by hand, per year. The fingerprints of these workers are still visible in the bricks of many of these historic sites. The Horlbeck family planted the allée, the Avenue of Oaks that leads up to the plantation house. Enslaved gardeners and field laborers planted each oak in 1843, using hand tools. Similarly, the Horlbecks directed their workers to plant pecan trees on the plantation to cultivate a commodity crop. By the end of the century, Boone Hall was one of the leading producers of pecans in the United States. When Henry Horlbeck died in 1837, several of his children settled his estate by transferring their interests in Boone Hall to four of his sons—Henry, Daniel, Edward, and John Horlbeck. The sale occurred on October 1, 1842, and described the plantation as having a "Wooden Dwelling House[,] Brick Stables[,] Barns[,] Brick Kilns[,] and buildings" on 1442 acres "commonly called and known by the name of Boone Hall." 20th century Canadian Thomas Stone purchased Boone Hall Plantation in 1935 from the Horlbeck estate, coinciding with the Colonial Revival architectural era. Deciding that the surviving wooden house did not fit their idea of a southern plantation house, Stone and his wife, Alexandra, demolished the historic structure. They replaced it with a historically styled, yet modern house in 1936. The Stones focused the property's agricultural production toward the 200-acre pecan farming operation of what had been a 700-acre pecan farm. They also built an electrical plant that created power from the tides of the nearby rivers to power the plantation. In 1940, the Stones sold the plantation to Georgian prince Dimitri Jorjadze and his wife Audrey Emery Jorjadze, an American socialite. The prince raced thoroughbreds under the nom de course, Boone Hall Stable. His most notable horse was Princequillo, who in 1943 was the fastest distance runner in the United States. The Jorjadzes sold the plantation to Dr. Henry Deas in 1945. He sold it a decade later to Harris M. McRae and his wife Nancy in 1955. The McRaes continued to farm the land, shifting the focus to peach trees. They opened the plantation to public tours in 1956. 21st century Boone Hall is still owned by the McRae family, which has made great efforts to preserve the original structures and gardens. Due to its role in the antebellum south and the survival of its brick